Adding custom windows? (Visualizer, album art)

Hi I was wondering if there's an example or if you have any recommendation on how to go about adding custom windows to the player?

For instance, I'd like to add my own visualizer or display album art (something like #519, but with the ability to plug in any arbitrary div). Is this supported? My first thought is to hack it together by using some of the same css but hoping there might be a better way.

Thank you! Absolutely loving webamp

Start by determining whether Webamp currently supports adding custom windows or arbitrary divs for a visualizer or album art. Review the existing window approach referenced by issue #519 and document whether an example or supported extension path exists; done means a clear recommendation or a defined feature scope.

Written by the indexing model from the issue text.