Well that was the main point of the thread, in the stock media player. What's the point to have 100 media players? One for movies in idk what format, one for audio, one for cosmetics and so on...

I asked that, because I saw many apps in store that adds like subtitle support or new codecs... I don't think it's that much pain to add this feature. But we have to think it, how will it work, etc.

I personally use right now Ironcope for visualization, but it's not like the same feeling like it would be to have it INSIDE your media player.

Here is a more specific ideea, but this time without visualization overlay. Just rotation between visualizations when a button is pressed: