Earlier quoted context omitted.
What do you think of: "Add beautiful widgets to your website." It's as short and easy to remember as the current tagline. How does it sound for a native english speaker?
I think the word "widgets" may be confusing to a lot of people. It could mean a lot of different things. I would actually spell it out and include "videos, audio, images, and more..."
It's explained in an animation, going through the words describing it: players, galelries, and ends up on widgets. I believe that might work! :)