Step-by-step Guide: How to convert MP4 to MP3 as BlackBerry ringtone
Here is a simple 2-minute step-by-step guide showing you how to imput MP4 video to MP3 as BlackBerry ringtone quickly and effortlessly using BlackBerry Ringtone Maker.
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 MP4 video you want to imput to MP3 as BlackBerry ringtone.
You can click the "Browse" button to select MP4 video you want to imput to MP3 as BlackBerry ringtone. If you want to imput clip of MP4, 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 imput MP4 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 imputed from MP4 before transferring to BlackBerry.

Step 3. imput MP4 to MP3 as BlackBerry ringtone.
Click the "Start" button to imput MP4 to MP3 as BlackBerry ringtone and BlackBerry Ringtone Maker will imput MP4 to BlackBerry ringtone MP3 automatically.

Then you can transfer MP4 to BlackBerry ringtone MP3.

Tips: When you transfer MP4 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 imputed from MP4 to BlackBerry directly.
BlackBerry Ringtone Maker can bring you:
imput MP4 video 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