Yeah. I just started having this issue. I generally set up a slideshow from my Flickr account playing an iTunes (Match) and just let it play for general ambiance in the room, but this skipping and Error Occured Loading Content crap is killing the joy in a large way. It seems to have started today and I sure hope Apple gets on this. These threads do not encourage me. At all. Especially considering it seems to be going on for months, and Apple offers only bizarrely obtuse denials or deflections? Not a good look in a viciously competitive market, Apple. You've taken thousands of just my own dollars since the late 90s. Don't get all moody and lose your mind (and support), now!
Details: it seems to be happening to me only on songs purchased directly from Apple. If I skip back and replay, it seems to cut off at the same place each time. The answer--down the road--seems to be stop buying songs from Apple and just import rips or copies of non-apple mp3s/AAC. Hunh. For now, I can play non apple tunes or air stream from my iPhone to the Apple TV, I suppose.
I know apple rarely can cop to being wrong, but usually trots out a fix later when nobody is looking. And with software glitches (which it may very well be, here) we have a better chance of repair than if it is the (admittedly rare) hardware mess up (antennagate). So maybe we'll get lucky soon.
Ah the empowered consumer life.