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Re: Sound cron job delayed while VLC running

On Fri, 8 Jun 2018 16:33:45 +0200 (CEST)
Roger Price <debian@xxxxxxxxxxxxxx> wrote:

> For nearly 20 years, I have had a cron job in which a dog (yes, it's Biff) barks 
> the hours.  The lines in /etc/crontab are
>     0   0,12  * * *  rprice /mnt/home/rprice/bark/bark.sh 12
>     ...
>     0  11,23  * * *  rprice /mnt/home/rprice/bark/bark.sh 11
> In the bark.sh script, the sound is produced by sox command
>     /usr/bin/play -q hour12.au
> I have now migrated to Debian stretch but would still like to hear Biff barking 
> the hours.  The cron job works well as long as VLC is not running.  But while 
> VLC runs, the cron job waits.  When VLC has finished, I hear the barking.  Is 
> there some way of having the barking while VLC plays?
> I can see nothing in VLC configuration file ~rprice/.config/vlc/vlcrc which 
> prevents others from accessing the sound card at the same time.

Is sound mixing generally working on your machine? Try, e.g., the dmix
test from here: