This is a Belkin II Tunecast FM transmitter that I bought at Wal-Mart for $30. This is a fairly simple modification and you can find instructions anywhere on the internet, I just reproduced it here for my website. I actually choose not to use this in my display. Keep in mind this is line-of-site and I have several trees blocking where I need to put it which hinders it's signal. I can get about 3 to 4 houses down the street, then it cuts out abruptly. If you have a two story house with a clear site-line down the street you can probably get about 2 blocks out of it.
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