I recently have an issue whereby albums with fixed songs refuse to play afterwards. They show up in the control point but when pressing play nothing happens.
Restoring the album from an earlier backup fixes the problem.
Any idea what might cause this?
No known problems in this area, but for certain formats there are actually different ways the audio data and metadata can be written.
What format are the files, what were you using to serve the control point (i.e Twonky/Minimserver etc), for testing purposes can you still play the files using another method (i.e iTunes/Winamp)