To complete this procedure I used Audacity 2.0.5 open source software on a PC running Windows 8.1 Update. The phone I used was a Nokia Lumia 635.
Select the Required Section of the Track
- Open your MP3 file in Audacity.
- Play the track and note the start and finish time for the section of the track you want to use as a ringtone (typically about a 30 second chunk).
- In Audacity, click in the waveform area at the noted start time.
- Hold the shift key and then click at the noted end time – the required section of the track should now be highlighted.
- Press the spacebar to play the highlighted area and then adjust the required section of the track as required.
- Ensure the required section of track is highlighted once you have tweaked the start/finish time.
Trim the Start and Finish
- From the Edit menu select Remove Audio or Labels and then Trim Audio – just the required section of the track should now be displayed.
Note: There is no need move the start of the remaining section of the track to zero as the white space before and after will be removed automatically.
- Click in the waveform area about 1 second before the end of the track.
- From the Edit menu select Select and then Cursor to end of Track End.
- From the Effect menu select Fade Out.
- Click in the waveform area about 1 second into the track.
- From the Edit menu select Select and then Track Start to Cursor.
- From the Effect menu select Fade In.
- From the File menu click Export and save the MP3 file as normal.
Find on Phone
- Connect the phone to the PC (open File Explorer and the phone should be listed once connected).
- Browse to the Ringtones folder and copy in the saved MP3 file.
- On the Windows phone access Settings, Ringtones+Sounds, Ringtone and the imported MP3 file should appear in the list of ringtones under the Custom heading.
Note: It is possible to convert other audio file types to MP3 using Audacity as long as the LAME plugin is used. See the Audacity website for details: http://audacity.sourceforge.net.