It looks to me that it's a proprietary flash player they've created for their purposes. It continues playing the same song even when you load another page. And it looks like the artists pages use javascript to tell the flash player what to load such as when you click on a "listen to (artist's name)" link.

Not entirely certain but the methods that they use make it difficult to see into the background.

It looks to me that it's a proprietary flash player they've created for their purposes. It continues playing the same song even when you load another page. And it looks like the artists pages use javascript to tell the flash player what to load such as when you click on a "listen to (artist's name)" link.

Not entirely certain but the methods that they use make it difficult to see into the background.

This is awesome.

is it jquery plugin or other plugin
or it is custom made javascript

Well I am assuming that the flash is custom made for their site. The javascript calls are probably somewhat routine but can't really tell because I can't tell how their flash player handles the calls to it.