wow.... ok, i googled arround for ~ an hor and didnt find anytying...

then i just found this.

BlackBerry Search Results

Optimal Settings for the Media application on the BlackBerry Pearl 8100 smartphone
~Audio Settings
1) Audio format: MP3

2) Audio bitrate: 128 kbps

3) Sample rate: 44 khz

4) Channels: 2 (Stereo)