Not sure if this is where to put this post but I wanted you leave a link to my hubby's new blog that might be helpful to some. He's the worship pastor at our church and in his former life, he was a software and hardware engineer in the audio industry (recording mostly). He now is using his laptop with his keyboard in live worship and is learning lots of things that I have NO clue about but since I know some others do this too, and he started this blog to archive all of the info he's finding, someone here might find it useful.
http://laptopsynth.blogspot.com/
Enjoy!