If you are using an Android smartphone, download a ringtone cutter app from the Google Play Store. Use this app to select the specific part of the song you want to use as your ringtone.
After muting the music, go to your phone's ringtone settings. Choose the new ringtone from the list of available options. Some Android phones also allow you to set specific ringtones for particular contacts.
If you're using an iPhone, add the song to your iTunes library. Connect your iPhone to your computer, sync it with iTunes, then go to your phone's ringtone settings to select the new ringtone.
Before finalizing, test the ringtone to make sure it works properly. Call your phone from another device and verify that the selected song plays as expected.
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