Thanks a lot, Stevie.
In the meantime, I tried it (following the instructions on the “download” page of your link), and here’s the result:
(as you can tell, I’m playing a FLAC file over DLNA, and there’s a second track on the playlist which I supposed that is meant to make the gapless transition possible (it shure works)!
Next, here’s the view from the “now playing” window of JRiver webgui, on which I can change tracks or fast forward/rewind.
And finally, here’s the same web browser GUI from JRiver, from which I can choose what music to play:
As you can imagine, with this setup there’s no point on accessing volumio web GUI, as all the music selection is made within JRiver server.
In order to be able to do this, I have a windows 7 based NAS (basically an old laptop with a damaged LCD screen) working 24/7 on another room (no fans on my listening room, please), and running JRiver. I installed it first because I wanted a DLNA server for streaming all my music to the iPhone (without the iTunes proprietary c*ap).
These screenshots are from my iPad, but it works on any web browser (Safari, Firefox, IE, etc).
That’s exactly what I was looking for.
Thank you again! 