Just to comment. If you care about sound quality at all get rid of the FM modulator. Try to figure out an AUX. input. What kind of hub are you using? USB 1 or 2? USB hubs usually get a 5V input. If that's the case then you should be able to tap into the PSU 5V line and power it that way. On the keyboard. I would recomend a RF one and not an IR one if you get a wireless setup. You'll thank me later.