In Jaikoz 3.8.3 a user was complaining that Jaikoz couldn't open their mp4s. Turns out the problem was that they had been edited in Songbird, and Songbird save track no differently to every other mp4 player I ve tried.
I added a workaround to Jaikoz and raised a bug with the Songbird team.
A little time passed, they linked it to another issue which wasn't the same problem and then they just closed it. I complained and reopened it because nothing had been fixed, and now they have downgraded it to a suggestion for a future release. Because Apple have not written a nice neat specification, it is acceptable for the Songbird developers to ddclare no bug. I really hate it when developers bend over backwards to try and show there not at fault rather then trying to resolve the issue.