YoutubeBoombox allows you to play any youtube video you want directly from in game.
As long as the host has the mod, the song will sync to everyone with the mod. Players without the mod will not hear anything.
This plugin will download ffmpeg and ytdl for you.
The audio is synced, but everyone has to download it, and it won't start until everyone has it downloaded.
How to use:
Features:
/bbv number to change the volume of the closest boombox on your client within 15m
/bbv 50 is half as loudyoutube.com/watch links and shortened youtu.be linksyoutube.com/playlist?list=LIST_ID ensure there's no v= in there, otherwise it'll play just the single video