I know that some here were interested in the bluetooth pucks mentioned in this forum months ago. I saw this deal on this bluetooth transmitter that sounded pretty good. Now I don't know if these are even the same thing as the pucks and I have no use for either, but I wanted to link to the deal in case they will help out others. They are intended for in home use, but they do come with a cable that allows them to be powered by a USB port. Anyway, here is the link.