I think this is answered in this thread, but all of the names are new to me other than JRiver, so I want to clarify.
Setup is: Chromebook, 3TB external USB 3.0 drive with a bunch of music files, iFi DSD Micro, headphones, network.
Network is slow (DSL, can't get anything better), and streaming really isn't an option. Plus there are times when I want to take the whole setup and go somewhere else to work, and there's no network at all.
So, the solution needs to be self-contained. I don't want a remote that plays from a central server, because the server's at my house behind a firewall on a slow network, and the Chromebook is somewhere else.
On my PC, it's a non-issue. The setup is PC, 3TB external USB 3.0 drive with a bunch of music files, iFi DSD Micro, headphones, and JRiver to orchestrate browsing files on the external drive and playing them to the iFi.
The missing piece on the Chromebook is the software to orchestrate browsing and playing files. It appears that JRiver doesn't provide a native Android player, only a remote client.
Forgot to mention that many of the files are SACD format, as .iso files. The iFi plays them natively. Whatever software does the orchestration has to recognize those files (as JRiver already does).
What should I use as the player, on the Chromebook?
(The iFi folks say that a Chromebook already has an OS with a driver that will work.)