Thanks for letting me know! I think this is a rare bug, and I'm pretty sure it's caused by the audio element not properly loading. It's definitely on my todo list!

I will probably make it availble once I've cleaned up the code and made some improvements to the algorithms. Beat detection can be spotty on constantly loud songs.

I'm not sure how milkshake is generating it's visualizations, but with Vizrify I was playing with using the new WebAudio API (which will be coming to firefox in a while) to access html5 audio element FFT data directly. It also opens up the avenue to do other cool audio transformations that are difficult to do otherwise.

Oh ok, sounds cool. :) In which chrome version did it get supported?

I'm trying on chromium 23 on Linux Mint and only see 2 concentric circles and nothing is playing / moving.

Though here it seems not to complain like it does in FF when in chromium and I could hit a random play button on the page:

http://www.html5rocks.com/en/tutorials/webaudio/intro/

cheers!

I've experienced some users reporting bugs using chromium and ubuntu, I haven't had a chance to look into it, thanks for letting me know!