can I auto-mute 'line' channel when not using tvtime?

[darkfox]

SOLVED!

Thanks entirely to the support of Rich Duzenbury, this has now been
achieved.  The solution is obvious to any of you beyond n00b status,
but for those like me here's how to do it:

1> Install aumix (a small soundcard mixer)
2> Make the following script, ensuring that the file has execute
permissions:
#!/bin/sh
aumix -l 100
tvtime -t /tmp/TV.xml
aumix -l 0
3> When you want to start TVtme, execute the script rather than the
application directly.  In Gnome you can do this by right-clicking your
TVtime icon, choosing 'properties' and changing the command (to for
example in my case: '/usr/local/share/scripts/tvtime.sh')

Finally this type of solution should work regardless of which TV app
you use, provided the audio signal goes into your sound card via the
'line' channel.

Thanks again Rich!


-- 
darkfox