Does anyone know of a decent alternative to the now (apparently) discontinued RCA Lyra wireless transmitter / receiver? I want to set up some speakers in remote parts of the house just for my HomeSeer speaker to be heard when the whole house audio is off, and the Lyra was at the right price point at around $30 - 40. I just checked ebay, and only one was available. I'd like to be able to do this in 4 places, and don't want to have to buy a transmitter every time I just need a receiver. Any ideas at this price point?