The transmitter also keeps the neighbors happy. The same songs played on a speaker all night might make them unhappy.
I would like to add a speaker. But it would be on a pushbutton activated timer.
My neighbors wouldn't be close enough to hear it. We don't live in a neighborhood where cars can park on the street either, so a simple sign saying tune to XX.X fm works great!
But I can see why having a speaker could be a nuisance.
The Lowes packaged kit is great if you don't want to spend the money or don't know how to make the brains work... Also I don't want to invest a lot of time/money into it, but wanted something more then just the standard lights and moving deer type stuff.