OGG AAC and MP3 Player Software 7.0 Overview

Play MP3s slowly by adjusting tempo. Also, adjust pitch to make slow playback more listenable.

Abominaclavia is a bizarre drum machine-like sequencer that lets you assign audio files to 128 separate beats each with its own controls for pitch, volume, and stereo panning.

Append multiple MP4 files. Save result as a new file.