I have successfully compiled Plex Media Player!
I'd share build instructions but I don't quite remember what I've done, as I have modified my building toolchain quite heavily.
So I just got it working on my switch. Nothing to install really. I just went to the plex website. plex.tv signed into my plex account, then clicked on the "launch" link. I have my plex server running on a headless PC running ubuntu. it's not a very fast PC. I can't remember the exact CPU, but i think it's a dual core Intel ruining at 2.2GH. My friends and fam all have access to it. there are times when i put a new movie on it, or something like GOT is on a given day, and i might have a dozen people streaming from it with no lag. not sure if you know this, but you cant stream to a mobile device without paying for a monthly, or lifetime plex pass. now that I can watch it on the switch I no longer have to bitch about that when i'm out of town.