The computer in the other isn't a problem. I am doing the same thing, you just need long enough RCA cables to reach the receiver from your PC for the signals to be sent; if you want to use the signal generator in REW, which is the most convenient way with the PC in another room.
I have found my onboard sound card is very lacking in the lower frequencies as well as the higher ones, it drops off substantially below 70 and above 12khz. I have just bought
this external card so I can use our laptop and take it along with me to help set up other Ht systems as well. I will let you know how it works out, hopefully later tonight.
