The .mid file, is more completely compatible with most MIDI players.
Abyss Media Company
Process audio files to change the pitch and tempo of a musical composition.
Great for musicians, slow the audio down and learn those solos, guitar riffs etc.
Organize karaoke sessions with more than 28,000 high-quality karaoke songs.
Straightforward MIDI tool to convert these data files into real music files.
Create karaoke tracks from your own music collection with this pogram.
Propellerhead Software AB
It lets you alter the tempo, or replace sounds and process them individually.
Software for changing the pitch and tempo of a song, and creating Karaoke files.
Change the pitch of any MP3 song without changing tempo. Great for musicians.
Fine Metronome is an application to check, tweak, and control music tempo.
Chronotron Pro allows to change pitch without affecting temp and/or change tempo.
Devine Machine Software
It's an advanced tempo-based filter/delay multi-effect.
Manipulate video with this award winning tool that can and alter tempo speeds.
Chronotron allows for you to change the key and tempo of a song.
Can help you to maintain a consistent tempo while playing any instrument.
jMetronome is a metronome for musicians to keep the tempo.