About audio recording: "Record Audio" captures your browser's spoken preview using the tab-audio-sharing permission (Chrome/Edge desktop only) — when prompted, choose "This Tab" and enable "Share tab audio". It's a best-effort browser trick, not a cloud TTS API, so quality depends on your installed system voices. The .txt script download always works everywhere and is the safest way to hand prompts to a phone system admin or a professional voice-over service.