I have a Gold Edition Whole House Transmitter.
It has a audio cable, and a wire antenna.
If I can find a usb power cable I'll include it... otherwise you can use a battery. (it takes a 5v external source)
cost, as is... $20, and shipping is $6 in a USPS flatrate box.
selection of transmit stations is limited, it is selected by dip switches on the side (7 choices)