I'm thinking princeplanet wants to study Bird et.al solos. If you have recordings, you can listen to that, but hard to copy or study. If you have it on sheet music but you are not a strong reader, or there are multiple parts going on at the same time, you can study the music better. But there is nothing better than hearing and seeing (weather seeing notation, animated keyboard, chords, etc.), so getting it into midi is the way to go. And having the chords right there, you can study how the soloist weaves the jam through the changes (of course this means real study). Then you can simplify or otherwise alter the midi music to make more suitable for your needs and abilities. We're talking using midi as a learning tool.
I'd say weather or not it sounds stiff is of no importance unless you are going to play it for someone. And I would hesitate to say that the solos of biab would be a good sub for a Bird, Bill Evans, etc. masterworks - give me a break.