Every once in awhile I plug my iPod or iPad into a TV using a mini-to-L/R RCA cord. On the TV I use one of the composite inputs just to listen to music or audio books. Two of my TVs work just fine when only connecting the Red/White RCA audio plugs, but my Panny Plasma requires that I plug an RCA into Video-In too and it requires that this video plug have some sort of signal (a stand-alone RCA plug won't work), otherwise the L/R audio inputs won't work on the TV input. What's different in the TV connections where audio-only will work on some TVs but not on others? Seems silly that a TV would require a Video input to be connected before it allowed the audio connections to work for a specific Input.