Faslo   
by FASLO.COM   

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. Is capable of storing altered audio for later retrieval. Can play speech in reverse at the click of a button. Has voice effects including voice changes. Intended for transcription, rapid dissemination of audio content, voice alteration, and musical appreciation/enjoyment.