It's in a way strange to have no sound at all (none of the audio-codecs is working) with free version. But it could then be explainable if you keep in mind that in free version, you don't have primary audio channel, but second audio channel. So if a film comes translated in primary channel and original in second channel, you always have original version. And if a station does not send any audio in second channel, you just don't hear anything at all. Can please someone confirm that?

Btw: it would be nice to be able to chose sound channel in free version. But to still keep a restriction, I would suggest you to not allow stereo in free version, only either primary or secondary, but not both channels; or both only as mono stream, not as stereo stream.

You can change audio tracks in channel properties. Or?

That one in the upper right corner? OK, I'll have a look at it ...

btw: trying to change right-click audio-setting tells that only available in pro-version ...

... here again some channel values were lost (not the first time); I had to make a new manual scan of the DVB-C frequency, then it came with sound ...

Right->Channel properties->...

Right->Channel properties->... and there in the upper right corner ...

yep, that's what I meant ... and that's working ...

btw: I really wonder that on this way, you make available "multiple audio channels" – what you write would only be available in pro version – but the only difference seems to be that it's not "in the easy way" by right-click-in-tv-window->audio, but only by "channel properties editing" ...

difference in mechanism. when you change over context menu or from RC then ProgDVB change stream without stop of channel.