The Audio Speed Converter app allows you to change the speed (tempo) and pitch of music independently.

Features

• Convert speed (tempo) and pitch of music independently.
• Ultra-fast batch conversion of your whole music collection.
• 24 bit high quality audio support.
• Multi-channel (for instance 5.1 DTS) support.
• MP3, M4A, FLAC (lossless), WAV (lossless) output.
• MP3, M4A, FLAC, WAV, and many other input formats are supported.