My PX21s arrived today. Yay! Very happy. I've run into a problem however. I play my PS3 through HDMI on an Asus monitor (NOT a tv.) This is the included diagram in the manual for HDMI setups: I've skipped step 2, as I only need the sound through my headset. I've also had to ditch the PX21 audio cable (the one with a 3.5 at one end and two piggyback white/reds on the other) because my monitor has no red/white, only a 3.5. So I moved my PS3 reeeally close to my monitor, hooked up the USB to the PS3 and the 3.5 to my monitor. I've changed the audio options in my PS3 to "Audio Input Connector / Scart / AV multi", but I can't get the sound to come through the headphones. I got the mic working just fine. Any help?