So far so good, haven't had the buffer full error come up yet after unchecking those boxes in BiaB. Rendering the song is not a problem because he uses the SD-35 to play the MIDI files. This actually brings up the main issue he has with all the new technologies: The nice thing about playing MIDI files on the gig is that you can change the tempo, key, etc. on the spot with the SD-35. If he switches to a soft synth or real tracks, these songs have to be rendered to wave audio and then you don't have any control over tempo, key.. So what is/was nice about the old roland daughterboard is that you had the same sounds while composing that you would have on your gig.