I am looking for a speaker upgrade, and am able to get a full set of Tannoy SFX 5.1 for cheap. Currently, I have a pair of M-Audio AV40 studio monitors hooked up to a Behringer Xenyx 302USB, which is also connected to my TV. This mixer is connected via USB to my computer. I'm off to uni and the Tannoy surround sound is way easier for me to fit on my desk compared to the studio monitors, and I'd like some surround sound for movies and the like. What exactly do I need along with the Tannoy system? Do I need an AV receiver? I looked at the manual for the SFX 5.1, and it appears that you require an AV receiver. My current mixer/soundcard only has output for L/R main speakers, so I guess isn't appropriate. What sort of thing do I need to look for? Basically I want to be able to plug my computer and TV into it, the option to use my Xenyx mixer as well would be a bonus (perhaps plug the Xenyx into the AV receiver as the sole input?), as it's the soundcard of my computer, which I would like to keep.