The lame thing about this audio interface, though, is that the RCA jacks on the audio interface are inputs... there isn't an RCA output, unfortunately. The only outputs are the four 1/4" audio jacks on the back and the 1/4" headphone jack which I've used all along with my current speakers.
Also, my Beocenter 7000 doesn't specifically have an AUX option, is it the this equivalent of the Tape In on the front of the unit that uses this 5-pin DIN connection?
On the off-chance this would work, I have an old Peavey 14-track mixing board that has tape in and out and main outs that are intended to connect to a PA system... could I somehow connect the Beocenter through this unit? As in, from one of the 1/4" outputs of my FW interface, to a Line In on this unit, and then a 1/4" to 5-pin DIN or something like that? This probably won't work at all but I'm thinking I'm going to need this mixer somehow...