Actually, you wouldn't need a cue sheet at all.

Hmm. Personally, I quite like the idea of removing the one to one correspondence between a file and a tune. Although, I guess playlists are already like a virtual tune, that consists of lots of files, if you never shuffle that playlist. But it would be a lot easier to tweak some kind of metadata than to move frames from one file to the other, if you change your mind about where the boundaries should be.

Also, you could have some overlap, so that (for instance) track 2 begins before track 1 ends. Your cue sheet could contain some volume information as well, so that you can fade in at the beginning, and out at the end. This might let you still listen to sections of a continuously mixed album in shuffle mode without that jarring effect.

Richard.