My dealer did speak with Meridan about the high-res file issue, and they said the Source:Five wasn't really designed to deal with those files. They did provide a software upgrade that improved things a bit, but didn't entirely clear the problem. So something must involve the Source:Five, because the exact same files played through the ID:40 off the MD600 sound fine.

[BTW, it's not just subjective sound quality -- the files stutter and break up like a bad radio station in spots, but not throughout the file]

Anthem, Bluesound, Beogram 8002, and more.