That is, if he want something that plugs into a PC's USB port and outputs sound via optical. Not sure if this supports bitstreams (like Dolby Digital). also, if this will be connecting to a Mac, better make sure it's compatible.
What I am looking for is a digital out in 5.1 from a USB I have seen some converters on the market but none of them work with Windows 7. MY laptop puts out good HDMI (Dell XPS M1530) but my processor only translates the video so I need a digital audio out either RF, COAX or OPTICAL from USB.