[Feedback] Great DJ: create and share music playlists

Great DJ! - Create, save and share your playlists.

Hey there IH community, first-time poster here! :)

I've been developing on-and-off the the past few years a side project to do with creating and sharing music playlists easily. When I started my use case was simple, sometimes I wanted to share a couple of tracks with friends and I found all the other methods (Spotify, etc) too complicated.
I also implemented a "party mode" that will sync a playlist position through multiple clients, which can be used by a group of friends listening to music together or as a way to remotely control a playlist via your phone, for example.
It has a couple of other features but I'll keep it simple for now. :)

Although I've been working it for a while, it never really took off. There's some companies in this space, so I guess the need exists, not sure whether I'm lacking in product, UX, marketing... so I'd be super grateful for any kind of feedback. Thanks!