Follow these steps to add a file to a Playlist:

Step 1:
Select Files from Contents.

Adding a file to a playlist in PosterDigital 2 (3)

Step 2:
Click on the name of the file you would like to add.

Adding a file to a playlist in PosterDigital 2

Select Add to a playlist

Adding a file to a playlist in PosterDigital 2 (6)

Step 3:
Select the playlist in which you want to add the file and click on Add.

Adding a file to a playlist in PosterDigital 2 (5)

The file will be added to the Playlist list.