Does anyone know if all the playback plugin audio files are loaded into RAM? If they are, am I correct that using the (MacBookPro's) internal HDD would be an ok place to store the files? (I'm wondering if I need a seperate FW HDD for live playback) I can split my set up into concerts of say 6 songs each with about 6 stereo playback files of about 4minutes. If I'm correct, anyone have a feel for how many songs are practical for 4GB of RAM? Or am I wildly off in my thinking? I've just started on Doug's video tutorials (very impressed so far) so maybe I'll find the answer in there.