Search in Baidu and click on "Square Dance"-video, and there will be square dances of many video websites. Download the video you need, and then use the conversion tool provided by the software to convert it into an MP3 audio file (in order to ensure the sound quality of MP3, it is best to choose the edited square dance video and replace the live recording in the video with a better audio file).

I recommend you to use the free download software "Tang Wei FLV Video Download Software". Most video websites play video files in FLV, F4V and MP4 formats. Tang Wei can download video files of the above formats from more than 300 video websites, and it has its own format conversion tool, which can be converted into MP3 audio files, which can fully meet the needs of dancing at ordinary times.