In this showcase you can try how easy it is to manage your mp3 playlist online. Just use CTRL+SHIFT+2 in order the Online Page Editor Add-on to popup, type username: showcase; password: showcase and the Advanced HTML Editor 3 will open. From the File Manager Add-on you can upload any MP3 to the default created playlist, which upon save will be displayed in the HTML5 MP3 Player. Once the music starts, the HTML5 Music Visualizer Add-on displays the chosen effect.