I found a minor bug, but it only shows up on my Wii.
I installed Fireplay on my NV+, and tested with the Opera browser on Wii and with IE and Safari.
On the Wii, on albums with more than 9 songs, the “Nbr” list shows
1; 10; 11; 2; 3; 4; 5; 6; 7; 8; 9
Fortunately, IE and Safari show the correct sort order:
1; 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12