How To Stream To VLC From Friend’s Server

Plex Media Server Remote Access
3

You cannot access remote Plex servers with DLNA. DLNA is working only within a local network.
VLC doesn’t talk “plex”, so DLNA is all it can use.

Here is a workaround using Plex Media Player for your audio level issue:

https://support.plex.tv/articles/216459997-create-your-own-inputmap/