I just have a script that wraps pw-record and ffmpeg to transcode to a mp3 file. I’d also like a GUI for it tho

Jellyfin-mpv-shim supports SyncPlay

Windows debloater fixes it, check out Sophia. It disables all the crap Microsoft forces on you

You need to expose the ports you want to access on an external, publicly accessible server like a cheap vps. Then you can use wireguard to forward the traffic to your Pi.

I haven’t done it in a long while, so I can’t explain it well enough, try searching for “vps wireguard gateway”. That should bring up some blog posts that will explain the process better. I used a VPS I got on the AWS free tier, you really don’t need anything expensive.