It is not impossible with Acid Pro 3, When the midi file is loaded into a track it converts via your wave table utilizing your sound card[it is just like as if you played it, but done thru the software], and much quicker. The quality of your sound source is important. I use Roland's VSC88 wavetable and it works fine.[BTW the drums on the wavetable put the factory drums on the XP to shame]..Fran