When you go at this URL: https://app.roll20.net/audio_library/
By default, it shows all the tracks in each playlist. If you have a lot of playlists, with a lot of tracks, it's not practical at all. I think it would be much better to show only the playlists. And if you want to see what's in them, you just have to expand them.
In other word, by default I'd like to see this:
Instead of this: