ihateaudio is 49 free audio tools in one place: trim, join, convert (MP3, WAV, M4A, FLAC, OGG), normalize to LUFS, bass boost, slowed + reverb, nightcore, 8D, iPhone and Android ringtones, BPM and key finder, plus an AI studio with a vocal remover, stem splitter and transcriber. It all runs in your browser. No signup, no upload, no watermark, no ads. AI agents can use the tools too, through an MCP server.