I have PTMP 7.1.1, MacBook 2.2G Intel. I do not seem to have the option window that allows selection of choosing Constant Bit Rates vs. Variable Bit Rates Mp3's when bouncing to disk. I see this in the ProTools Ref. manual this window, but not on my version. The manual doesn't state whether this is only for some versions or not. Does anyone know about this? At this point I'm assuming it's only an option on the HD versions.