I downloaded some of the music available on this page, and some of the songs (such as this one) have problems playing back in foobar2000. The file plays normally in both VLC and iTunes, yet , in fb2k, seems to 'stutter' somewhat - though not in the way that happens when the buffer is too small, but sorta like a CD that keeps skipping. I have tried setting all the playback settings to their defaults, as well as using another computer with the previous fb2k version (0.9.5.3), but it still happens.
Edit: Also, the problem persists when I use fb2k to decode it to a .wav file and then use any player to play the resulting file. When I use the Nero aac decoder, the resulting file plays normally. I can post audio samples if needed.
Update: I've uploaded a small problem sample here.