A suggestion is to include something which breaks up the song list from an album to clearly show different discs in a multi-disc collection. At the moment, if I select an album with multiple discs, it just shows all the tracks in numerical order, with disc 2 starting at the end of disc one.
An automatic separation to add a line break between those would make navigation a little easier, along with the ability to jump to the beginning of each disc at the top - or even selecting which disc to play (or not to play).
So under the album information, you could have:
Disc 1: Jump to/Play
Disc 2: Jump to/Play
And in the track listings, you could have:
Disc 1:
1 Track
2 Track
Disc 2:
1 Track
2 Track
etc.