Scroll down to the preview section in the playlist editor. Click the play button to preview the playlist. Since this is a live view, it may take a few moments before you see the visual.
Click the rectangular button on the left of the progress bar to stop watching the preview.
By default, the preview has a general view pre-selected. Want to see what’s shown on a specific player? If desired, you can select a specific FRAMR. Player.
Want to see how your playlist looks in a different resolution or aspect ratio? Click the arrow next to “Target device resolution” and select the resolution you want.