Has any one used the style edit feature to change style parts i.e. change an audio drum or bass to a midi and the other way around?
Do the audio parts in a style play well regardless of what ever tempo change you do?

That would be one of my concerns with audio parts in a style is if the Audya has a good enough algorithm to do time stretching.
This would be important when doing part swapping between styles. I may like an audio bass or drum track in style A and want to use it in another style. But the new style I would want to use the audio sound in is a style that plays best at 60 BPM faster than the original style A.