Ron, there are decent soft synths, that record nicely..I have been satisfied with NI Bandstand (2 gigs for 128 instruments)..and Hyper Canvas does a decent job...

I am also using PC80 synth that only functions with the PC80 controller..

I would try and find Bandstand...

Send me a SMF to demo, I will record it in Bandstand (wave), and convert to MP3...and send it back to you..