Comment 1 for bug 464008

I seem to have found the source of the problem.

At one point when using mpg321 instead of mpg123, I got an ALSA underrun error, prompting me to search for solutions relating to alsa underruns with mpg123. One solution was to use the plughw device (-a plughw), which worked. I've made this permanent by adding a single line to my .asoundrc file:

pcm.!default "plughw:0,0"

Hopefully, this solution will come in handy for other people who encounter the same problem.