"The Wheels Of Steel" Browser-based turntable prototype
Finally! The UI I've wanted to build for years, mostly-realized.
A work in progress which began with a simple <div> - CSS 3's border-radius allows for circles, overflow:hidden lets us have clipped (ie., circular) background images - you can see where this is going.
This is experimental and very dependent on hardware acceleration, but it runs pretty smoothly under Safari on OS X.
SoundManager 2 under the hood, along with a number of other technologies. Release and documentation TBD.