Does anyone know what Grooveshark.com is coded in? I mean PHP, rails, flash........?
This post might be helpful: The Tech Behind the New Grooveshark
Grooveshark is a rich Internet application that was first written in ActionScript using the Adobe Flex framework that ran in Adobe Flash. In December 2010, Grooveshark introduced a redesign of the site that features an interface rewritten to use HTML5, which makes the interface perform faster.