This is odd because there's nothing really weird about the files, but there HAS to be something about them that is incompatible with the game because all the songs are from the same album so they share most things except name and number. The files are regular mp3 files and I even tried changing the filename and lowering their bit rate in case that was somehow conflicting with the game, but it didn't work. Could there be a title or data inside the mp3 I should erase to make those files work in morrowind (things like author, title, album, year, who encoded it, that kind of stuff)?
If not, what are the other extensions morrowind use regarding audio files? I tried .ogg files but those weren't even recognized as audio files.
I've uploaded one of the files so whoever wants can check it, and tell me if they know what's wrong with the file. If this is prohibited, please delete the link.
http://www.mediafire.com/?ntttk2fmzym
EDIT: Ah, I got it fixed. The embedded cover art was screwing up with the game, so I had to remove it to make it work.
Mods, please close this thread if you'd be so kind.