usb audio dongle only plays right channel

[kens]

I tried a USB audio dongle (Turtle Beach Audio Advantage Micro) and mpd with my plug, but for some reason, only the right audio channel plays.  It works fine on Windows with both headphones and speakers, so it's not a hardware issue.  I've read over the PlugWiki USB Audio page (http://www.openplug.org/plugwiki/index.php/USB_Audio) and searched on Google a bunch, but I can't figure out why only one channel would play.  Any suggestions?

(One problem I did figure out was the audio quality.  For some reason, the default mpd config file plays one-channel audio but with terrible crackling sounds.  Uncommenting the alsa audio_output lines in /etc/mpd.conf as described in USB_Audio got rid of the crackling and reduced CPU load.)

[kens]

I fixed my audio problem with alsamixer (from apt-get install alsa-utils).   Running it apparently fixed whatever was set wrong with the sound settings.  I'm guessing alsa had one channel muted for some reason.

[tspyrou]

I am using mpg123 and getting crackling. installing alsa-utils did not help. Any ideas short of mpd?
I do have both channels playing but crackling.

[dvbuser]

Check Force ALSA dmix to 44.1khz on this page:

http://mpd.wikia.com/wiki/Tuning#ALSA_dmix

[hungarianhc]

Out of total curiosity, what are you using the USB audio to do?