*sigh* All right, all right, I know I was very critical of this whole thing, but I'll admit that the DKC2 Brambles one is pretty friggin awesome. Of course, the fact that it's one of my favorite VG pieces might have to do with that...
I still think it would be more convenient if you could somehow export it as a MIDI file again, but I doubt that that's possible with the limited instruments available when using MIDI. Although I believe that mp3 is somewhat inconvenient for fangames, I guess it will still preserve the quality better than MIDI will (since MIDIs will play back slightly different on each computer, depending on the sound card that is used). Oh, and I actually did think of a very good use for having these in mp3 format: YTMNDs!
http://whatisnes.ytmnd.com/ is a good example.
Oh what the heck, here, just for kicks:
http://danthemanms.googlepages.com/GerudoValleyRemix.midhttp://danthemanms.googlepages.com/Castlevania_Wicked_Child_3.midThey might be a bit too complex for GB style, and they're rather long, but they're good MIDIs nonetheless.
I'm still interested to know how you do this, lol.
EDIT: heh, just noticed that this is my 312th post. My birthday is March 12th, aka 3-12. Interesting. Now I need to keep going until I reach 31290 posts...