I'll be putting up a MP beatsaber lobby in 2 hours. You're all welcome to join if you can get sweaty enough.

Install mods via mod assistant. Make sure to enable noodle/mapping extensions: https://github.com/Assistant/ModAssistant/releases
MP Mod. We use the Andruzz version: https://github.com/200Tigersbloxed/BSMulti-Installer/releases
Not related but you should install 4chan sound extension: https://greasyfork.org/en/scripts/31045-4chan-external-sounds