Hmm, Paulo, a sound idea, and I don't want to trample on your hard work, but...
What you're providing from your list right now are all MIDIs converted to MP3s.
MIDIs are very displeasing to listen to because a MIDI file's sole purpose is just to provide notes for a music producer/composer to edit its events/note placements/etc.
It would never fit within a game/scene unless the AA series was a game series for MS-DOS for the 90s
What I'm saying is, the title of your thread right now is misleading to the contents that you are actually providing at the moment.
No one can really use the tracks unless it's in original MIDI format to remix/remake AA tunes.
You might not know this, but there are few MIDI channels on the AA games that don't play at all even if you converted a sequence file to a MIDI one, so you don't hear everything that's supposed to make up a song there either on a few of these tracks because said channels relies on instruments that don't exist on your PC at the moment.
So having it converted to MP3 *alone* is a BIG disadvantage for everyone.
Can you provide the original MIDI files as well as the MP3 ones?