Hi, I have no idea if this is the right place to post this question, but I will try anyway. I have just recieved my very first audio interface, a Behringher U-Phoria UMC204HD. After some minor trubles I got it to wrok with my headphones. I can hear my bass when its plugged in and audio from my pc. I had a home theather audio system that no one in the house was using, and since i dont have any speakers I thought it might be a good idea to plug it in. It's a Pionner Audi Multi-Channel reciever VSX-521 with Jamo speakers and Sub-Woffer. The whole thing works fine if I for example plug my laptop to the portable input on the front panel via a mini jack. So I tried pluggin it to my interface via RCA cable, but I cant get any output what so ever. Is it even possible to plug this system into my interface and use it like a normal speaker?