Here's some free advice -- don't go cheap on your HDMI cable. There are inexpensive ones all over the place, but a lot of them are garbage. The problem seems to have a lot to do with audio -- I've had cheap HDMI cables that will carry video just fine, but dropouts in audio have been a problem (and an annoying one).
That doesn't mean run out and get the most expensive HDMI cable you can find. It does, however, mean you ought to stick with a reputable company (i.e., one that is actually familiar to you).