I just bought a new TV (Sony KDL-EX500) and am having a peculiar problem with the audio over HDMI. I have my cable box, Xbox 360, and PS3 all connected to the TV over HDMI. I then have an optical audio cable connected from the TV's digital audio out port to my reciever. The Cable box works fine and in 5.1, as does the Xbox 360 when playing either games or movies. The PS3, however, refuses to cooperate. Games are being played in 5.1 audio, but any movie I try (I have tried several) will not be in 5.1. They seem to be sending a dolby surround, or maybe 2.1 signal. I have tried every audio setting on the PS3 I can find, and no change. Any idea what I might be doing wrong?