Grooveshark webapp doesn't work with Firefox

[Alin Andrei]

The Grooveshark webapp doesn't work with Firefox (no launcher icon or sound indicator entry). It works just fine with Chromium though.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity-webapps-grooveshark 2.2
ProcVersionSignature: Ubuntu 3.5.0-16.25-generic 3.5.4
Uname: Linux 3.5.0-16-generic x86_64
ApportVersion: 2.5.3-0ubuntu1
Architecture: amd64
Date: Sun Sep 30 16:14:54 2012
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120914)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity-webapps-grooveshark
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Bence Lukács (lukacs-bence1)]

It has to be mentioned, that sometimes it works, but in most cases the webapp is unusable.

[[e-mail] (extraymond)]

Any progress on this?
Grooveshark is really a good feature that should be enabled from the starting point of the ubuntu experience.

[Vladimir Rutsky (rutsky)]

I can confirm that it doesn't work in 13.10 with Firefox.

In 13.10 with Firefox two launcher icons appears --- first opens yet another tab in Firefox with Grooveshark, and second opens already opened tab.
Sound indicator entry doesn't appear.