Note: If you delete the app and re-install, or install on another device with a same Apple account, when you Share Videos(Share in iTunes/Save to camera/Extract audio) it will prompt and ask you to pay again, just click "Yes" and "Buy", it will show "You've already purchased this. Tap OK to download it again for free."

click "OK", it will unlock IAP item for free. You won't have to pay again. 

* Playlist (loop/random)

Type1: Search items for playlist:

you can play a items list by search for a keyword

example: you want to play a list that made by all of coldplay videos

input "coldplay", shows 26 matches, click left play button

Type2: Make a playlist with items that you exactly want to play

example: you want to play a list that made by all of coldplay live videos

let's say the playlist name "Coldplaylive",now select one video you want to add to playlist, click "Edit video",add tag "Coldplaylive", click top right "Save" button, then continue next one, till all videos you want to add to playlist are added.

OK, now click top search bar, enter "Coldplaylive," it shows 15 matches, click left play button to play a playlist

Important: the last "," must be entered, it means search for all of items with tag "Coldplaylive"