How to disable thumbnail playlist

The plugin itself doesn’t have a way to disable these, I’m afraid.

If you use standard JW Embed code though, this is possible to do, see the bottom example here – https://support.jwplayer.com/customer/portal/articles/1428529-display-a-playlist-sidebar

Oh oke sir, i try it

Okay.

But can we embed code like this inside wordpress post, how? Doesn’t seem to work. I want it to show text (title) instead of thumbnails, and I can’t seem to find a way to do it inside wordpress.

It should work as long as you are using text mode, not visual mode.