For music conversion, I have been using dbPowerAmp. The price isn't too bad and there is just about every file format under the sun it converts to and between.

As for streaming to my Pre-Amp. I have made up a small windows box using a Zotac Zbox, and run foobar as my media interface. I likes it because it was free and at the time, JRiver didn't have anything remotely looking like workable with linux. I liked the Monkeymote app for my ipad to bring up the music. I can also dual use the machine with the FooBar sound going out the optical connector, and have Kodi running as well to do TV and movies with that connected via the HDMI.


Anthem: AVM60, Fosi DAC-Q5
Axiom: ADA1500, LFR1100 Actiive, QS8, EP500, M3, M3comp, M5