To "group" a few items together you need to select them all with the mouse
then press on the small box in the items left corner (to ungroup press again on the x in the box)
Add any Photo, Glitter or Animation from the Wix editor or Upload your own stuff!
If you want to upload your music:
Click on the "Media" icon in the left menu >
"Music" and upload the music you want from your comp. or from a URL!
If you want to REPLACE a music player:
Press on the player and click on the "Replace" icon on the bottom menu
If you want to ADD a music player:
Click on the "Widgets" icon on the left menu > click "Players"
