That site... it's hurting my brain. I don't know whether to laugh, or cry, or huddle in a corner and start sucking my thumb. Carbon HDMI cable
There are significant, audible differences between HDMI cables. We're not sure how this is possible, since HDMI is purported to be a purely digital interface, however, the sonic differences are repeatable and consistent from system to system. A better HDMI cable makes a better digital audio cable, period. This is as true for music as it is for movies.