Streaming music (spotify, etc.) in PM or FF: is it possible?

[redandwhitestripes]

Hi guys,

Sorry if this is posted in the wrong place.

I'm looking to get palemoon or ff playing music online.

This problem is with tahrpup 32 and 64 bit.

Firefox up to version 30something plays music from spotify.com or joox.com. but any higher version does not. Hovering over the 'play' button on either website reads ":;javascript" at the bottom of the screen, but nothing happens.

In my 64 bit version of tahr, I somehow have palemoon playing from joox.com but spotify says "this browser is not supported".

I can get these sites playing by using chrome or slimjet but is there any way to get my beloved mozilla browsers playing them?

I've tried updating flash, emptying cache, logging out of the websites and in again, no joy. I've also tried adjusting settings in the browsers but I can't see any obvious solutions.
Thanks in advance.