If you're unsure of how to install a userscript, you can find guides on how to do so for your preferred browser below:

I was bored so I decided to make a userscript that allows you to select between the Phosphorus and Flash players without leaving the Scratch website. I haven't dabbled in Javascript too much in the past, so excuse my (likely awful) code.By default, the Phosphorus player is used. If I get any requests to change this or make it configurable, then I'll look into doing that.I've only tested this on Chrome with Tampermonkey, so let me know if there are issues with any other configurations.