customrv, what dave says it a bit right, i do know audio is a complication issue with CARPCs... im not 100% sure how to help you here
its possible that no Front End alone will solve your issues...
and maybe something like AudioMulch will need to come into play
there is a bunch of talk in the forums(somewhere) about advanced audio
me, i might want it all externally processed... im not sure exactly how i would want it
(i say would, because i dont have a carpc)