I'm a registered user from Italy. A feature that I would be glad to see implemented is the correct visualization of characters not used in the English language, especially the accented vocals. In Italy we have lots of accented words (just think the word "is", in Italian is an accented "e"), and several other countries use them (France for instance).
When I insert artist, title, and tracks in "Properties" windows the letters show correctly, and the same in "Content" listing, but on the album page they are trasformed in other letters or signs. This is very boring because I always have to trasform the accented letter into a normal letter plus an apostrophe, such as