well you can go and buy a midi port that plugs into your cpu (computer) at your
local music store or at
http://www.musiciansfriend.com/ midi port will coast about $40 and up
then you can buy this software
http://www.squest.com/Windows/Instruments/jv-80/ this will cost you a little money $200.
this will covert the files for the jv 1000
it fast and easy but will cost a little
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this is a little work and a very cheap
you could buy a midi cable that plugs into
you sound card they are not very much $20.
and go to download.com and get a free midi
software.
once you do this you can play the midi drum
file on your cpu & record it in to your
jv 1000
have fun