How to Save Ringtones to iPhones
Sometimes a song is so strongly linked to someone you know that having a ringtone to signal their calls just seems appropriate. Once you've downloaded a song to iTunes, it's easy to convert that song to a ringtone for your iPhone by selecting the part of the song you want to use and converting the file. After you sync the ringtone with your iPhone, you may use it as your general ringtone or link it with a specific person.
Start iTunes and select the song you would like to use as a ringtone. Listen to the song and jot down the 30-second portion you want to use. Right-click on the song and select "Get Info." Choose the "Options" category and check "Start Time" and "Stop Time," then fill in the start and stop time of the 30-second part of the song you'll use as your ringtone. Click "OK."
Right-click on the song and select "Create AAC Version." The new 30-second version of the song will automatically appear. Drag this file out of iTunes and onto your desktop. Delete the version in iTunes.
Change the file extension on your desktop from .m4a to .m4r. Double-click on the file, and it will instantly appear in your ringtone folder in iTunes. Connect your phone to your computer. When iTunes opens with the summary of the data on your iPhone, click on "Ringtones" and check "Sync Ringtones." Click "Apply." The ringtone will upload to your phone once it starts syncing.
To apply the ringtone to all your contacts, select "Settings" on your iPhone. Choose "Sounds" and then "Ringtone," then select your new ringtone under "Custom." If you want to apply the ringtone to just one contact, select the person from your contact list, then click "Edit." Choose "Ringtone" to select your desired ringtone. Click "Save."