I don't have a problem at all with using a SMF. Sometimes that can be the way to go. When my band does some electronica type songs like Hella Good by Gwen Stephanie or Get The Party Started by Pink I use an SMF to generate those parts that would be impossible for me to play. But I play one of the parts over it. Faking playing is just cheezy. Better off just to play the SMF and not play at all than fake it. But SMF playback can be very useful.