thanks for reply, but my problem is not to upmix mp3s or dvds, because ALL the "internal" sound of windows are already upmixed from 2.0 to 7.1 by the cmss encoder of the audigy!
the problem is that cmss doesn't upmix the line-in channel..!
sorry for my incompetence but.. how to use a vst plugin?
i don't want to record anything, i just want to redirect line-in sound to the "wave" line of windows mixer..
but i can't find any program that does this redirection..
but i'm sure it actually exists [somewere..

].. because a lot of people use line-in input to record old LPs.
a software that allows you to prelisten your recording, for example with realtime noise processing, MUST exist! please help me to find it!
it seems to be the easiest solution.. at least in my opinion!
thanks!