[black_eagle]

...another option would be anytime the next track wasn't the same album it could drop out of gapless mode and instead go into a compatibility mode where it would stop and start.

1) This has nothing to do with Estuary.
2) I don't particularly like that idea.  I often want to play multiple albums back-to-back without them stopping.
3) I can't reproduce it.  I made a playlist consisting of a combination of stereo PCM, 5.1 PCM, 5.1 DTS, stereo MP3, 5.1 flac and stereo flac.   The entire playlist played flawlessly.