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Simon Robert wrote: > when I do a search on dsp I end up with the following > > /sys/class/sound/dsp > /var/lib/alsa/dev/dsp > /dev/dsp > /dev/sound/dsp Ok thats reasonable, looks like you've got alsa and a oss compatability layer for alsa. But i could be wrong! > > all except /dev/dsp are owned by root. /dev/dsp is owned by me and is in > the audio group. /dev/sound/dsp is a symbolic link to /dsp also owned by > root. I don't know how to find out what it is linked to, I'm assuming > /dev/dsp? A bit odd that /dev/dsp is not owned by root? But then various udev/hotplug and other things can do magic to those and change them as you log in etc. > > I started a root session and tried playing stuff, changing the kmix drop > down and then using amarok. This made no difference either. > > This makes not a vast amount of sense to me, but on the basis of what I > think it means I checked the volume on PCM is up, select the USB audio > stuff from the kmix drop down and set the master channel to PCM. Yea you want PCM up, thats the basic digital input from the kernel channel. > > pcm in /proc/asound looks like this > > -r--r--r-- 1 root root 0 Sep 23 09:00 pcm > > how would I send an mp3/wav file to it? With out decoding you can't send a mp3 file anywhere (well you can but its a horrible noise). You can send a wav file to /dev/dsp etc by doing cat mysound.wav > /dev/dsp ONLY do this to /dev/dsp or /dev/sound/dsp DON'T do this to /proc /sys /lib etc... entries. Robin -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html