Ahhhh figured it out. I edited the .RATdefaults file in my home directory. -J
I am having issue with RAT not selecting line-in when it launches into a venue. I am running Ubuntu Feisty with a SB Live! soundcard. In the past, I had to select line-in the first time RAT was ever launched, but after that it seemed to remember it's input.
THanks, -J