I want to have a 4.1 (or possibly a 5.1) setup, but don't want to spend a whole lot of cash. I currently have the good old Microsoft Digital Sound System 80's (2 speakers + Sub) and a Seismic Edge 5.1 soundcard. Instead of purchasing a new 4.1 set of speakers, I'm thinking of just simply getting a pair of stereo speakers and using them for the rear left and right outputs. What do you recommend for a good pair of stereo speakers that sound good, but don't cost more than $40 or $50? Thanks in advance