From Power Karaoke:
Karaoke Sound Tools removes vocals, adjust key, and tempo of karaoke songs. With Karaoke Sound Tools it is easy to remove vocals, change the key of the song, and change the tempo of the song. Works with MP3, WAV, BIN, and MP3+G (MP3 and CDG) files.
What's new in this version:
Version 2.0.3 has fixed bug where minimize button do not works properly.