Step-by-step Guide: How to convert AC3 to MP3 as BlackBerry ringtone
With the following 1-2-3 guide, you can learn to operate BlackBerry Ringtone Maker to convert AC3 to MP3 as BlackBerry ringtone with fast speed and high quality.
At first, you should download BlackBerry Ringtone Maker and install it correctly. And then you will enter the interface of BlackBerry Ringtone Maker.

Step 2. Choose AC3 files you want to convert to MP3 as BlackBerry ringtone.
You can click the "Browse" button to select AC3 files you want to convert to MP3 as BlackBerry ringtone. If you want to convert clip of MP3, you can pre-listen the file to set start time and end time.

Tips: If you want to set start time and end time to choose clips to convert AC3 to MP3 as BlackBerry ringtone, you should adjust the blue sliders to control.

Then you can choose wanted folder of your PC to store MP3 ringtone converted from AC3 before transferring to BlackBerry.

Step 3. Convert AC3 to MP3 as BlackBerry ringtone.
Click the "Start" button to convert AC3 to MP3 as BlackBerry ringtone and BlackBerry Ringtone Maker will convert AC3 to BlackBerry ringtone MP3 automatically.

Then you can transfer AC3 to BlackBerry ringtone MP3.

Tips: When you transfer AC3 to BlackBerry ringtone MP3, you should install BlackBerry Desktop Manager on your PC, which can make your BlackBerry phone sync with PC, and then connect BlackBerry to your PC, BlackBerry Ringtone Maker will transfer MP3 ringtone cinverted from AC3 to BlackBerry directly.
BlackBerry Ringtone Maker can bring you:
Convert AC3 to MP3 as BlackBerry ringtone totally
Support all popular mobile players
Convert different audio files to BlackBerry ringtone MP3
Extract MP3 audio from variable video files