Select View > My Library ( ) from the RealPlayer menu bar.

Click in the navigation bar and select the Playlist you wish to edit.

Click Add Clips in the Tasks area of the sidebar. The Add Clips From My Library dialog will appear.

Select the clip you wish to add.

Click Add to Playlist to add the clips and close the dialog.
 

Select View > My Library ( ) from the RealPlayer menu bar.

Click in the navigation bar and select the Playlist you wish to edit.

Select the clip(s) you wish to delete.

Press DELETE on your keyboard.
 

Select View > My Library ( ) from the RealPlayer menu bar.

Click in the navigation bar and select the Playlist from which you wish to copy clips.

Select the clip(s) you wish to copy.

Click the Copy To Playlist menu in the Tasks area of the sidebar.

Select a Playlist to copy the clip(s) to.

The destination Playlist is opened in the display area with the clip(s) added.
 

Select View > My Library ( ) from the RealPlayer menu bar.

Click in the navigation bar and select the Playlist you wish to edit.

Drag and drop the clips into the order you wish.

or
 

Select a clip(s); then select Move Up or Move Down from the Edit menu.