Open the Virtual DJ software or download a free trial version online.
Scroll down to the "Browser" window and select your music file(s) location from the folders on the left. Drag and drop the selected song(s) to the "Browser" window on the right.
Organize the selected songs in the order you want them in before you drag and drop them to the left in the "Playlist" window. Expand the "Playlist" window and enable or disable the "Auto Mix" option, which is indicated by a wand located on the left inside the playlist interface.
Click the "Lock" tab, which is indicated by a padlock, located at the bottom of the playlist window.