hello i currently have an ordinary Onboard audio interface with 6 channels (5.1). i am planning to buy a m-audio fast track pro because this is what i can afford buying now learning. but i have an doubt about the set of interfaces i should have. first of all i have a Creative Inspire P7800 Speaker System (it is 7.1ch) connected to my onboard audio converting 5.1 to 7.1 "on-switch" behind the p7800's subwoofer. what would happen to my surround sound when i have attached the m-audio fast track pro interface? Would I be able to use 7.1 within fast track pro or should i have 2 audio interfaces, one for recording (m-audio) and other for playing 7.1 (i.e soundblaster audigy 4)? I understand that the sb audigy 4 should work as a GeForce video interface, having all the audio processing working inside it (sb audigy) and the m-audio interface would work only as input channel manager, but no processing. what i mean is that m-audio clearly does not process ANY audio. this would still be the main cpu's function. if i want a better audio processing then sb audigy 4 would do it. if that is correct, do you suggest ANY other manufacturer for audio processing other than creative soundblaster series? thank you for help and patience. i know that sometimes i ain't clear enough but i hope i have made my point here. hope for you answers as soon as possible. thank you.