Do i really need a tv? + audio static problem.

Do you have the phone charging off a 12 volt plug in charger as you are sending audio down the line? This is one cause of "Static" (it is called a ground loop).

Another cause ... this will cause noise to show up every so often for about 1 second or less. is handshaking. The audio cable is picking up the RF (Radio frequewncy) from the phone.. But that only every time the phone handshakes with the tower.