Aha, so ok, found time for next question please.
If one googles "JRiver vs VLC for DTS" there are a long list of people over years...…….
Appearing to ask the question as to why VLC works and JRiver does not. I will clarify that a bit further on.
However, so far I have not spotted a clear answer to the question.
The observation that ;
VLC always sends these files to an external processor which then detect the DTS stream and decodes it accordingly.
JRiver on the other hand, never does this for some people, and some times does for me, but not very often.
I can not make it do it when I want, even for the same items that have worked via JRiver many time before.
The capability seems to come and go with the winds of upgrades or phases of the moon, no idea which or what.
I really have no idea why this would be an issue that has not been dealt with for such a long time, (years and years) in a manner that means it either now never happens or there is a clear set of steps, perhaps in a sticky some where to deal with this.
There are a lot of questions here, and I am tempted to go on, but, this simple start may well, hopefully take me some way towards understanding.
Thanks again all.