Resolves the open question in TODO.md about whether WavAudioFormat's "must be 1 or 2 channels" doc comment is an enforced limit - a 5-channel plugin recorded a valid, non-silent WAV with no clamping. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JAZXxJbHD7PzdKaNE6Nuiv