Yes ELK, I’m also doing this with JRiver and I already mentioned it somewhere here as a wish for Octave, too.
But this is something one could continue to do with JRiver (with its own separate library) even when Octave isn’t able to support it, as other than Bridge III, our Tablets which we use outside of our network continue to support DLNA.
It seems JRiver is currently also providing a browser based GUI as amsco15 mentioned. At a first look as expected this seems to be much much worse than the dedicated app Jremote. There are too many wishes for Octave to mention when getting into detail.