1. Use the built-in format conversion function of Cool Dog Music: Open Cool Dog Music, click the menu icon in the upper right corner, and select "Format Conversion" in "Utilities". In the format conversion window, click Add File to select the KGM file to be converted, then customize the output format to MP3 and set the output path. Finally, click "Start Conversion" or "Convert All" and wait for the conversion to complete.
2. Use third-party format conversion tools, such as Hi format video Aconverter or ADConverter, which provide audio conversion function and can convert KGM files into MP3 format. The operation steps usually include adding files, selecting the output format and setting the output path, and then converting.