Creating your own, personal ringtone with Adapter is really easy. All you need is an audio or video file as the source. Then, just add the file(s) to the source queue, click on the Output Preset drop-down menu at the bottom and select Audio > iPhone Ringtone (*.m4r) and use the Trim section in the Conversion Settings panel on the right to trim it to a 30 seconds or less duration. (If you don't see those settings on the right, click on the gear icon in the lower right corner to display the panel). Then, just click on the Convert button to have Adapter create your ringtone. That's it!