No specific info about version 3.1. Please visit the main page of Jamzone on Mac Informer.
A complete suite of tools intended to play and create karaoke files.
Helps you learn, transcribe or practice songs by changing tempo and pitch.
SoundPitch lets you change certain aspects of audio playback
Pitch Switch is an app that allows you to change the speed and key of any song.
It uses granular synthesis of audio files to generate a wide range of effects.