I want to be able to play one source (say a dvd ripped with mp3's or an ipod) on all the stereos in the house at the same time. All the FM transmitters I see are for the car and likely have a limited range, and possibly a limited frequency range too. A slingbox may do it, but it seems a little expensive and feature rich for what I want to do. Basically, I want to press play in one room and all the stereos in the house will play that song at once (in unison).
Any ideas?
Any ideas?