Thanks for the prompt reply.
I did in fact get the Mount working, it was no fault of the Pi or RuneAudio. My Windows file sharing was the issue. For some reason it stopped sharing with all non-Windows devices, so I had to re-share all the required directories.
I'm exploring this platform as a low-power replacement for Windows and Foobar with a small footprint. Hopefully It'll work out well

Thanks again for your help!