I built it after running into the gap directly: I needed authenticated, signed-URL audio streaming (HLS makes content meaningfully harder to rip than a plain file URL, which matters for protecting original audio) and couldn't find a library built for that use case. Oddysee supports custom auth headers configured once and reused across every request, a three-phase deferred seek model to prevent glitching during scrubbing, and session lifecycle handling so the player recovers gracefully from stale or expired streams instead of breaking.