Yes, I asked rtv this earlier in this thread:
@rtv:
What in config could be setting back volume settings to master?
If I edit mediaportal.xml:
<section name="volume">
<entry name="digital">yes</entry>
Then everything works fine until I run config which puts it back to "no" again
If you have the time, you could test other settings to see which one sets it back.
I didn't confirm but I think it is StreamedMP's MP-RSS Ticker plugin as I did not notice the behaivor until I enabled it. I will test more tonight if I have time.
In my case, it was the upmix to 5.1/7.1 setting in music section, that had to be unchecked.