A:Answer Hi, there!
To delete songs/pictures stored on your Walkman, use the software on your computer that you used to transfer the songs. If you used Windows Explorer to transfer the songs, use Windows Explorer to delete them. If you used the Finder on a Mac to transfer the songs, use the Finder on a Mac to delete the songs. For additional information, please refer to this link: https://helpguide.sony.net/dmp/nwe390/v1/en/contents/TP0000892247.html?search=delete -Sam