Zack,
You found out my secret ! For years I've been carrying a wireless transmitter for just that purpose. Whenever the room is hard to cover - I send a wireless signal to the stereo reciever that provides the house music. No wires to tangle - no fuss no mess.
Try it folks - but be VERY careful not to overdrive it. Those tiny speakers will not handle much bass, drums or loud peaks. Be Vewwy, vewwy caweful !