1)   Guitar and Drum Trainer 3.3.4
Improve your music playing faster and easier by raising the quality of your practice time. Slow down MP3 music to play and learn at your own pace. Pitch shift music instead of retuning your instrument. Filter sound with a 31 band EQ. Loop music.

 2)   Riffmaster Pro 3.0.5
RiffmasterPro slow down music software musicians, keeps pitch, learn song easily They Call it The Software revolution that's rocking the Guitar Playing world Instantly Play Any riff of Any Guitar Hero or Monster Player. Riffmasterpro music software.

 3)   PCslow Doctor 2.0build1214
PCslow Doctor will give you a good start at diagnosing and correcting issues that slow your computer down

 4)   MP3 Speed Changer 2.30
MP3 Speed Changer enables you to speed up audio files - podcasts, audiobooks without changing the pitch. Batch processing feature and easy-to-use interface make MP3 Speed Changer valuable tool for audio listeners and authors who want to save time.