I am setting up my first MC using Vista.  All is going well and I got eveything working.  I am using a 3.5mm to RCA plugs going into a receiver from the pc output.  I am getting a low electrical hum from the speakers.  Not really sure where to look first to troubleshoot.  I am using the intergrated sound if that makes a difference.  Thanks for any help.

Sounds like a bad ground.

I had this problem a while back. Found the cause was a power transformer was to near to a speaker. Just moved the power transformer away from the speaker unit and speaker cables and problem was solved. Hope it helps

Thanks guys, I'll be checking into these tonight after work.