I built Togewire, a self-hosted tool that lets you broadcast your Spotify listening session to anyone via your own website.
How it works: Monitors your Spotify playback state. Fetches the audio from YouTube using yt-dlp. Syncs playback to clients via WebSockets using a Go backend (Gin + Gorilla). It handles audio processing with ffmpeg (Opus) and includes a vanilla JS player you can embed in an iframe.