2 columns multiselect sortable elements module for a page of my website

I need two columns with selectable and sortable elements (audio streaming urls) The user selects music files from the left box (column) and send it to the right . The right box is the queue of a playlist player. The lower in the box is a file the higher priority to be played has. That means that the first file that will be played when user click play is the bottom one. You can read detailed description of the project here in this document: [login to view URL] You can see prototype alike design with easy detailed instructions here in this wix website: (click all pages, they have detailed directions) [login to view URL] Thanks