1. First, open Cool Dog Music, find a music to be edited, and click on the three dot icons.

2. Secondly, display the menu bar of the window on the page. Select the "Set ringtone" column, and then click "Open". Click the option of setting ringtone in the page to enter the ringtone editing page.

3. Finally, select Intelligent Clipping on the page, click Finish Music Clipping, and click Set as Ringtone. The page shows that the file is generated successfully, and the music clipping of cool dog music is completed.