The following is my opinion only:
I feel HDMI is overrated for audio. There are a lot of instances of the "HDMI handshake" not working properly, which you can research on this and similar forums. In my set-up, I've had the following issues:
-the handshakes would screw up often and cause a static-like screen to appear on the TV until you turned EVERYTHING off and waited.
-The audio "blips" that caused this thread are not exclusive to Directv or even TV service providers (my cousin gets them on his blu-ray via HDMI but not digital coax, which is what inspired my earlier-described rearrangement to try the audio via digital coax instead of HDMI).
-When I had the "handshakes" turned on, my A/V receiver would take FOREVER to turn on and when it did it would start on TV instead of Cable/Satellite (Which is the setting the A/V receiver is set to default to).
-If I plug the Directv receiver into HDMI1 on my TV, a weird line goes up the screen every 15-30 seconds (most visible on the old blue guide or on the green of a football field - anything that uses a good portion of the screen with one color). When usiing HDMI2, the line does not exist and no line appears when I use HDM1 for my A/V receiver.
With all handshakes turned off and using HDMI for audio only where I have to (my Blu-Ray doesn't have any other DD audio outputs), I have no issues at all. I use HDMI for video for Directv because it allows 1080p , which I feel is its only benefit. Like I said, this is my opinion. Everyone's set-up and equipment is different and if it works for you - more power to you. And I want charper1's receiver, which I now see the make/model number for. Look at all those inputs...