It is extremely easy to create a ringtone for your Smartphone.

You can use any audio editor, such as the free Audacity.

Select a favorite part of your audio file, apply whatever effects you may like (change volume level, add bass, fade in / out, etc.), save it as MP3 and copy it to the “Ringtones” folder of your phone.

From the Settings of your phone go to “Ringtones” and select your new ringtone to start using it immediately.

Enjoy!