You can use the cool dog music software to use the speed regulation function, as follows:

1. Find the cool dog music software on the desktop and click to enter the main page of cool dog music, as shown in the following figure.

2. Find the song you want to modify in Cool Dog Music, and click the picture option below the song to enter the lyrics page, as shown in the figure below.

3. find the double speed option below in the lyrics page, and click this option to enter the double speed selection page, as shown in the figure below.

4. select the speed you want to set in the double speed selection page (drag left to slow down and drag right to speed up), and then return to the previous page after selection, as shown in the figure below.

5. find the playback option below on this page, and click this option to successfully complete double-speed playback, as shown in the figure below.