Duplex mixing will allow multiple sounds to be sent to the audio card
at a time. Copy
/usr/share/doc/libasound2/examples/asound.conf_dmix to
/etc/asound and restart alsa:
Then multiple command line mplayers can all play at the
same time. Be sure to configure xmms
and
beep-media-player
to use the ALSA output device.
When running quodlibet
there is crackling in the audio,
which is not there when the dmix is removed! Running
mplayer and beep-media-player
are just fine.
Further details on setting up dmix is available from
https://alsa.opensrc.org/index.php?page=DmixPlugin.
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