In MusicMatch, Winamp, and SoundForge (but not WMP), the audio playback skips or hiccups. The computer is 1.5 years old. It didn't always do this. Music Match came installed when new. Their tech support is terrible. I've tried installing and uninstalling the program, the sound card drivers, etc. Dell tech support was clueless.
By the way, in WMP, video playback skips or is uneven. I don't know anything about buffers, but it seems like the video (and maybe audio in other programs) is not being buffered right.
My computer: Dell XPS 3.4 GHz, with 1Meg RAM, Creative Audigy 2, etc.