Overall it's really good. I'm going to have this running in a tab for a while :)

Some thoughts: - A couple of times the audio dropped. Each time I noticed the mute button was engaged and even unmuting the audio did not come back. Not sure what happened. - The progress bar caused a usability issue for me. It's so instinctual to hover at the bottom of the video and I didn't realise why nothing was responding. - Is it possible to have thumbnails for the videos in the playlist? - How do I scroll in the playlist? I could not figure that out.