Oh yeah, and of coure no "drive busy" errors and its a lot faster and it does send midi, only not the 3 turn knobs but all the faders and pads do (the play and stop functions i havent tested yet) and oh yeah, for those who want to try (at own risk, dont complain if you cant get your sp-808 os back!) get the A6 kit here (os midi files + the manual which you need cause it has v-tracks and stuff and a bit diff pad system):

http://askelo.free.fr/808nation/logiciels/A6_kit.rar

And the SMF player to send the midi files (keep the track select+fx select buttons above track A pressed while you power on)

http://askelo.free.fr/808nation/logiciels/SMFPLAYR.zip