that device connects to the PC via USB. you then connect it to a receiver via optical cable (or via analog cables if that's what you may fancy)
optical/digital coax can only carry up to 5.1 PCM, AC3, or DTS. if this is enough for you then it's worth a try.
for Dolby/DTS Lossless bitstreaming, and up to 7.1 PCM as well, you'd have to go with HDMI connection