I just noticed something else that may help in finding the issue.Once I scanned that first track, it played back the next time without issue. I played 15 seconds of the second track and it glitched like crazy. I stopped the track and restarted, and it didn't start glitching until 16 seconds in.
Good thoughts. I am using ASIO with an E-Mu 1212 sound card. I use this machine to do needledrops, so I spent some time getting everything how I wanted it. The thought of doing all of that over is less than appealing. But then, so is the thought of ripping all my discs and playing them locally. It is a sad surprise that making changes to improve the computer's performance have actually made it worse (at least in this way).I was so hoping that I would post this and get an answer like "ATI's codec x is known to be incompatible". I'll keep digging.
it won't play any optical media correctly.
It just dawned on me that I hadn't played an audio CD since all of this started. I tried one and it glitched as well. Even more strange, when it glitched it also changed the playback speed and pitch. Is there some Foobar setting that controls clock speed? Again, no issues with files from the hard drive, but now I am finding that it won't play any optical media correctly.