So here's the deal, I have a nice, old-fashioned stereo system that has a USB-input slot (for an A to B cable).  I've connected it to my Mac a few times to play the music through it, but the cord is a bit obstructive due to the speakers being across the room.  So here's my question, is there a way to have a wireless set-up or something less obtrusive?  I've seen those wireless USB hubs, but that's a bit pricey...

Any help would be great, thanks