eef1ab72d5
VoiceMixer duck-typed the discord.AudioSource interface (is_opus, read, cleanup) but never inherited from it. discord.py's vc.play() does an isinstance check and rejects non-AudioSource objects, causing the voice fx mixer to silently fail with: "Voice mixer failed to start: source must be an AudioSource not VoiceMixer" Added missing `import discord` and changed the class definition from `class VoiceMixer:` to `class VoiceMixer(discord.AudioSource):`.