No. To change mp3 pitch/tempo you will need special software (PCM Wave Editors), which will open your mp3 file, convert it to he WAV you will get opportunity to change pitch/tempo, if this function or plug-in installed and supported. Then you will need to save your working file as mp3 again. After these steps your mp3 could play with decreased quality but with the appropriate pitch/tempo. There is a no any method to change mp3 pitch/tempo without decompression/compression steps. But you can play your favorite mp3 file changing pitch/tempo "on the fly" during playback using free and shareware software. One of them is Tplayer
