This is an example of the JW Player's scrollable playlist.
*This example uses the JW Player version 6.7
With the current sizing of the player, having more than 3 videos in the playlist will activate the scroll bar, to view more options further down the list. To add another video to the playlist, amend and insert the following code after the previous item:
Remember that to get the sizing correct, you will need to set the width to the width of the video + the size of the listbar.
For more information, check out JW Player's official instructions here.