Easiest way.... if you have windows at least.
Windows Needed Application
You'll need an application to create MP3 files or rip a CD. We suggest this free tool
dBpowerAmp Converter 10.1[=http//www.dbpoweramp.com/bin/dMC-r10.exe]dBpowerAmp Converter 10.1 (Download and install it)
Windows Conversion Steps
Note If you want to rip a song from a CD, replace step 1 with these instructions.
1. We'll assume you're converting a file named "test.mp3" for this guide. Insert your own file name instead. Run dBpowerAmp and select the "test.mp3" file and click "Open".
2. Change the drop downs to be "Wave", "16 Bit (CD)", "22050 Hz", and "1 'Mono'" (no reason for stereo).
3. Click "Convert >>" and once it's completed click "Finished" and you'll have a file named "test.wav" in the same directory as the MP3 source file (or in the C\Converted Music\ directory).
4. Open the Windows Sound Recorder (included with Windows) and open the "test.wav" file created in step 3 (if you can't find Sound Recorder, Start->Run->"sndrec32"->OK).
5. Ringtones shouldn't be longer than 30 seconds and cell phones have limited memory. Therefore, shorten it to 30 seconds or less. You can also crop it so it starts at the beginning of the choirs. To crop the audio clip, use the "Edit" menu to "Delete Before Current Position" or "Delete After Current Position".
6. Click the "File" menu and select "Save" which will overwrite the "test.wav" file.
7. Run dBpowerAmp and select the "test.wav" file and click "Open".
8. Change the converting file to "Mp3 (Lame)", Channels "Mono", Frequency "22050 Hz" slide the quality to "32Kbps", check "Volume Normalize" and uncheck "Preserve ID Tags". DON'T go into Advanced Options or your ringtone WILL NOT WORK!
9. Click "Convert >>" and once it's completed click "Finished" and it will replace the "test.mp3" file.