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Song Tagging and Metadata Blog

Thursday, 17 January 2019

Hint and Tips:How to install SongKong database, logs and reports in a different location on a PC

SongKong stores a cache of the songs loaded and an audit of the changes made in its own database. It also creates comprehensive reports and detailed logs. With al this details there is no denying that over time these can eat into your disk space.

On Windows they are stored within


where username is your Windows user.

Recovering Disk Space

All can easily be removed and the space recovered by using the correct menu item:

Database: Empty Database
Logs :Empty Log Files
Report: Delete Reports 

but what about if you want to keep them, but just store the files in a different location in the first place ?

Windows Junction Points

With Unix and MacOS this can be easily done using symbolic links but these are not available with Windows. 

However Windows has Junction Points. these can be applied to make a folder link to a different location. For example here 

MKLINK /J C:\Users\Paul\AppData\Roaming\SongKong E:\SongKong

I have pointed 


to actually point to


Full Procedure

  • Shutdown SongKong
  • Create new SongKong file location (e.g E:\SongKong)
  • Copy the contents of old location to new location
  • Start command prompt (search for cmd) in toolbar search
  • Create Junction Point (mklink /J JunctionPoint  Folder)
  • Restart SongKong

and that should be it.

SongKong now available for sonicTransporter and microJukebox

Small Green Computer have added SongKong  to the list of software available on their sonicTransporter i5 and sonicTransporter i7 devices. These dedicated nas devices are designed to serve your audio files to a network player with the minimum of fuss, some variants can also run Roon Server

SongKong is also available for the microJukebox nas, this is designed to rip CD's and provide storage for playing  on a network server or Sonos system.

Monday, 14 January 2019

SongKong MusicTagger 5:14 Sister, Improved Matching and Metadata Release

We are pleased to announce the release of SongKong 5:14 Sister on 14th January 2019. This new release is named after the album by Sonic Youth from 1987. Sonic Youth have a great sound but can sometimes be a bit self-indulgent for my liking, but this album is full of sharp angry tunes plus the classic Schizophrenia


Improved Albunack DiscId Matching

Six months ago we introduced our own additional album matching algorithm that we call AlbunackDiscIds. When you have a complete album stored in one folder with no missing or additional tracks, and the track order can be safely determined from either existing Track No metadata or filename we can generate an AlbunackDiscId for your album. We can then look for a match in the Albunack database, if we find matches we double check by looking at any existing metadata and/or generating AcoustIds for the first track.

This has two advantages over fingerprinting all songs and then finding matches based on fingerprints/acoustids:

1. It is faster

Generating Acoustid fingerprints is a cpu intensive task, even on a fast machine it can take about a second per track. This might not seem much but it can become a bottleneck, especially on a machine with slow cpus, or only one cpu.

2. It finds more matches

Sometimes your album maybe in MusicBrainz but there are no acoustic fingerprints linking to tracks on the MusicBrainz release. If you have no existing metadata then we cannot find a match based on fingerprints/metadata but we may be able to find a match based on AlbunackDiscIds.

In this release we have increased the fuzziness of the track time matching, and in testing this has increased the number of AlbunackDiscId matches by 10%, giving a reduction in the time taken to match your music and an increase in the amount of music matched.

Improved AcoustId Matching

Conversely, there are many tracks in AcoustId database that we cannot find in MusicBrainz, in these cases we can at least make use of the basic metadata provided by Acoustid. We have now improved how we use the user submitted metadata provided by AcoustId to add more metadata to your songs, and we have also made modifications so that SongKong is more likely to use metadata from original albums that compilations.

Edit Metadata

Previously Copy Row 1 could be used to copy the metadata for row 1 to the other rows in the album, but what if you only want to copy metadata for a particular field.

In The Remote Browser interface we now have Copy Row 1 button for each column to do just this, and the old Copy Row 1 button has been renamed Copy Full Row 1

With the Desktop interface, the button is availble for each column when you right-click on a column header.



We also have a number of fixes in this release. As always, full details on the News page.


Tuesday, 11 December 2018

Jaikoz 9.4.1:Bug Fix Release

Today we release a fix for Jaikoz 9.4.0 a fix for the following issue:

 [JAIKOZ-1208] - Rename mask incorrectly display COMMENT language and description 

Was found to cause a problem with file and folder renaming. File and folder renaming would only work if you had a value in the comment field.

This has now been fixed in Jaikoz 9.4.1 

Sorry for any inconvenience this has caused.

Saturday, 8 December 2018

Jaikoz 9.4.0 Release

It has been a while, but we are pleased to announce a new Jaikoz release today!

New Artwork Options

Music players can be very picky about how their artwork is delivered so we have added some new options to allow you to deal with this.

In the Local Correct:Artwork tab we have added two new options.

Preferred Image Format

By default Jaikoz will save the artwork in its its original format. But by checking JPEG it is forced to convert into JPEG, or by checking PNG it is converted to PNG

If both options are checked  than original image files that are either JPEG or PNG are not converted. Other formats will be converted to JPEG, and PNG only used if there was a problem converting to JPEG.

Compress artwork if size is larger than this

Remember that JPEG is a lossy format that is compressed. By making the image more lossy it can be compressed to smaller and smaller sizes but with a loss of quality. The default setting of 100,000 Kb is likely to have no effect as this sets the image size to a maximum of 100Mb, but you can reduce this as required.

Tagging Compability

We have fixed over twenty issues that affect how metadata is read and written to your music files. These improvements will make Jaikoz work better with non-standard audio files, and ensure these files are more compatible with other applications. 

Other Fixes

We also have a number of other fixes for Jaikoz, full details on the News page

Tuesday, 20 November 2018

SongKong 5.13 Gattaca release.


SongKong 5.13 Gattaca released on November 20th 2018

This new release is named after the soundtrack from the sc-fi film Gattaca. Fantastic thought provoking film and the soundtrack by prolific classical composer Michael Nyman capture the narrative perfectly. Nyman has also done much work with film director Peter Greenaway, so many great pieces of music.

Use Windows Compatible Name

This releases fixes an issue with the Use Windows Compatible Name option introduced in the previous release. The main issue was that is was preventing the subfolder structure being created properly on non windows systems when Rename Filename for Metadata was enabled


MUSICBRAINZ_WORK_COMPOSITION was used whenever a MusicBrainz recording was linked directly to a work. So this was not really a work in the conventional classical music sense of the work, for classical it would generally link to a movement (this would then have a Part Of relationship to an actual work ). For Pop/Rock it did link to the work for that recording, but we do not usually want to store such works in the WORK field because that confuses tools and players that always expect works to encompass movements.

So this field was simply a way of storing the MusicBrainz Work directly linked to a MusicBrainz recording. The
MUSICBRAINZ_WORK_COMPOSITION was confusing and open to interpretation  so we have now renamed to MUSICBRAINZ_RECORDING_WORK, and
MUSICBRAINZ_WORK_COMPOSITION_ID has been renamed to MUSICBRAINZ_RECORDING_WORK_ID. This effects all audio formats supported by SongKong.

Renamed some internal field mappings

This is unlikely to effect many of you but we have renamed some of the internal tag mapping fields so they are better named and have better compatability with other applications.

For ID3 format (used by Mp3, Wav, Aif, Dsf) we have renamed the TXXX:Script field to be TXXX:SCRIPT.

For WMA format we have renamed ComposerSort to ComposerSortOrder


Friday, 9 November 2018

SongKong at Hi-Fi show WIndsor this weekend

SongKong at Hi-Fi show Windsor, UK this weekend

We shall be doing  a series of workshops about managing digitial metadata and demonstrating SongKong with our friends at Melco.

Please come and say hello.





How do I Get Artist Consistency in my music collection

Part 8: How do I Get Artist Consistency in my music collection

Part 7: How to add metadata to your music

Before we started digitizing music each album was a separate physical item.We found the one we wanted either because we had ordered our CDs or Vinyl ordered by the main artist or we just looked at a random set of albums until we saw one we fancied listening to.

But with digital music got much larger, and computers are not as good as humans at realizing that slight differences in artist names actually refer to the same artist. 

Common problems are:

  • Artists are not always attributed the same on every release:
  • Minor differences in names, such as initials, spelling errors
  • Artist deliberately use different name e.g Prince, Logo. Hollow circle above downward arrow crossed with a curlicued horn-shaped symbol and then a short bar, Formerly Known As
  • Different language or script, e.g. Пётр Ильич Чайковский / Pyotr Ilyich Tchaikovsky

This makes it difficult to find all music by a particular artist

Tools that lookup CD such as dbPoweramp do independently of any other CD by same artist, so no consistency and with manual edit, easy to make mistakes and introduce inconsistencies 

But SongKong understands Artists as entities ( we store an Artist Id we know who they are). We use MusicBrainz Artist Entities, defacto standard used by BBC, last.fm, Google and Spotify. But our database cross references MusicBrainz and Discogs, so we can use MusicBrainz artists even when we have only matched to a Discogs release.

Each MusicBrainz Artist  has a Canonical Name, instead of using name on release we can use their main name for all their releases.

If their main name is not in Roman script (eg Пётр Ильич Чайковский) we can use their Roman/English version of name instead.

Both of these options are enabled by default on the Format tab 


Friday, 2 November 2018

SongKong 5.12 Dandelions, Compatibility release.

SongKong 5.12 Dandelions released on November 2nd 2019

The new release is named after an album by King of the Slums. Vicious violin playing against downbeat lyrical stories make it truly like nothing else, one of Manchesters unsung heroes. You can give it a listen here on Spotify

Use Windows compatible characters in filenames

This happens anyway when running SongKong on Windows but with the increase in customers using SongKong with linux based NAS servers  a potential problem became apparent. Linux allows ':' in the filename but Windows does not, so if you create such a filename on linux but then remotely view the files in Windows Explorer a pseudo filename is generated instead that bears no relation to the actual filename. The colon character is commonly used in the album title of classical albums to separate the composer from the performers so it is a particular issue with classical music.

So we have added a new option that ensures any filenames created will be visible in Windows, any characters that are not allowed will be replaced with an hyphen character.

This option is not available on Windows installs since any names created on Windows will be Windows compatible anyway.

Melco Installations

Previous versions were missing a way to halt SongKong, and a way to prevent SongKong automatically starting when your Melco started. Solutions provided for both of these now, please see the Melco Install Page for details.

Get back to Progress page if Browser reopened

A few customers have encountered this issue when running in Remote Mode. Now this has been resolved as follows, if you reopen the browser and try to start another task it will now display an error message and take you to the progress page of the currently running task.

Better Memory Usage

The most memory hungry part of SongKong is actually the report generation at the end of the task. So if you are fixing alot of songs on a low memory device there could be an issue with the report creation, this has now been rewritten so that it does not require significant memory.

There was also an issue in Remote Mode that if there was a memory issue SongKong would just shutdown  immediately instead of handling  the memory issue, cancelling the task and creation a report . This has now been resolved.

Wednesday, 17 October 2018

Why has running Songkong on NAS left my files in an incomplete state ?

We just received a support request from a  customer who had just moved from using SongKong on a PC to using Synology Disk Station.

Hi Paul I have a technical issue with songkong the server version for Synology. it works but not all the time. Ive attached a screenshot which appears to leave the files in an incomplete state. when I undo and then go to the desktop version of dry it completes properly. it has this error maybe 50/50.

Actually what is happening here is the files are actually fine, but they are not Windows compatible because of one of the characters used.


Lets look at a folder on my own computer, it exhibits the same problem.

But if we view the same files using File Station on the Synology itself then everything looks fine

The problem is simply that the filenames include the colon character ':' and this is invalid in Windows so Windows just displays an alternative almost random filename. If you try and add such a character on Windows itself you get the following message

The problem is worse for Classical Albums, since convention dictates the album title separates main performers and composer from the title with a colon. So if this is used as part of the filename mask then the colon finds its way into the filename itself.

The same problem also exists for QNAP servers and any linux server.

Short Term Solution

Firstly the files are just fine, you will only see this issue if remotely viewing them from a Windows PC, viewing from a Mac or Linux computer wil be fine since these are both UNIX based.

But if you are a Windows machine  it would be nicer if the files displayed correctly on your PC. So short term the solution are:

  • Set Rename files based on metadata  to No on the Basic tab, this is the default setting and will prevent file renaming.
  • Edit the filename using Edit Songs Metadata to remove the colon, then they will display again as expected on your PC.

Long term Solution

In the next release we will add a new option to SongKong to enforce Windows compatible filenames when running on non-Windows systems. If SongKong is running on Windows then it only creates windows compatible filenames anyway.

Monday, 15 October 2018

SongKong now available For QNAP NAS Servers, Intel and Arm Processors !

Hot on the heels of the SongKong 5.11 release, that was the first to support Synology Disk Station, we now have an installer available for the majority of the QNAP NAS range.

And this versions supports both Intel and Arm based QNAP servers.

Install instructions are available here



Supported Versions

SongKong is available for all QNAP models that support QTS App Center (v4.2 or above) and the Container Station package, this is currently all recent QNAP models with an Intel CPU and also any QNAP with an Arm CPU as long as they have at least 1GB of memory. 

The following models are supported, full details availble from QNAP Container Station Page

  • Intel - TS-x51, TS-x51+, TS-x51A, TS-x53, TS-x53A, TS-x53B, TBS-453A, TS/TVS-x63, TVS-x70, TVS-x71, TS/SS-x79, TS/TVS-x80, TVS-x82 series
  • Arm - TS-x28, TS-x31P, TS-x31X, TS-x31+ series and TS-1635 with a minimum of 1GB RAM

Full Version, Full Functionality

This is the complete full version of SongKong, with exact same functionality as the PC, Mac and linux versions. The only difference is that you always control SongKong via the web interface rather than choosing between web and desktop interface.


Advantages of using SongKong on a NAS

There are three major advantages of using SongKong on the same NAS as your music resides instead of on your PC or Mac. 

Permanently available

Your NAS is usually on permanently, this means SongKong is instantly available if you want to fix or improve an issue with your metadata. And because it only uses the Remote interface it is available from any device that can connect to your NAS, this could be your iPad or Phone as well as a computer.

In contrast your computer is not probably permanently on, and even if it is it may get rebooted if you have it configured to get auto updates.  Unless you are using SongKong in Remote mode it will not be accessible away from the computer and therefore you'll not be able to quickly dive in with your iPad.


SongKong performance is based on three factors, cpu, memory and I/O. NAS has a big advantage with I/O since SongKong can access the files locally when reading the file and when writing changes to the file. Whereas a PC has to transfer the contents of your file over the network, and then send it back again when modifications are made. This has most significant effect when using large lossless files such as Wav, Aif and Dsf formats.

Your PC may still have the upper hand with cpu and memory, however the more recent  NAS servers  have much better specifications than earlier machines. And NAS servers are probably not doing that much most of time. So it can be a more efficient use of resources then using a PC and having SongKong competing for resource with other applications that you are using at the same time.


 Because the file I/O is local there is no risk of SongKong losing a connection to a file, so it is fundamentally more reliable than modifying files over a wi-fi network.


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