Step 1: Add Apple Music songs, album or playlist, audiobooks or any DRM-protected music files to your iTunes Library.
Please Note: you don't need to download them to your Windows first. Just add them to your iTunes Library.
Step 2: Run Apple Music Converter on your Windows PC. Apple Music Converter would load your iTunes library automatically.
Step 3: Tick the checkbox before the file you want to remove DRM from.
Step 4: Select output format. Apple Music Converter for PC supports 8 output formats: MP3, M4A, AC3, AIFF, AU, FLAC, M4R and MKA. Choose the format you want. You can also select audio quality from low, normal, high or set bitrate, sample rate according to your needs.
Step 5: Click Convert button and the DRM removal conversion starts. Do not use iTunes before conversion is finished. After conversion, click Explore Save File to quickly locate the DRM free Apple Music or iTunes songs.