Hey guys. I have just built a PC and went to use my V2s (theyre the ones with the USB port and mix amp). However, no sound is picked up and transmited to them. If I don't use the mixamp/USB parts though, and just plug the green and red 3.5mm jacks directly into the PC then it does work. I've downloaded all the drivers and all the rest of it yet I can't get it to work Anyy tips?