Faslo
by rspq.org

  MP3 and WAV audio player that can play files from the disk or Internet slower or faster without losing tempo. Also has the capability of voice and pitch alteration. Newer version is capable of storing altered audio for later retrieval. Intended for transcription, rapid dissemination of audio content, voice alteration, and musical appreciation/enjoyment. Advertisement applications include commercial shortening to fit time requirements and voice alteration for pleasing quality.

Related software:
mp3, wav, player, fast, slow, tempo, alter, voice, ...