i currently receive directv which also includes xm radio. i have my tv connected to a technics sa-ax720 receiver in order to get an audio when i use my dvd player or vcr. my problem is i can't listen to the xm radio unless the tv set is on. i just want to be able to feed the directv signal into the receiver and bypass the tv but so far i have had no luck. i really don't want to waste energy and put needless hours on the picture tube just to listen to music. any help from you experts out there would be greatly appreciated.