Rhythmbox play button not working in indicator-sound applet

[Rael Gugelmin Cunha]

In the Rhythmbox music controls at the indicator-sound, after click in the "play" button, button displays the "loading" image, but then nothing happens.

In its own window, Rhythmbox buttons are working properly.

Steps to reproduce:
1 - Click on indicator sound to expand it;
2 - In indicator sound menu, click in the Play button for Rhythmbox.

Expected result(s):
Last selected music/radio will start to play.

Current result(s):
Button displays the loading image, but nothing happens (see attached image).

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: indicator-sound 12.10.2+14.04.20140401-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-20.42-generic 3.13.7
Uname: Linux 3.13.0-20-generic x86_64
ActionStates: ({'mute': (true, signature '', [<false>]), 'phone-settings': (true, '', []), 'mic-volume': (true, '', [<0.2818603515625>]), 'scroll': (true, 'i', []), 'desktop-settings': (true, '', []), 'rhythmbox.desktop': (true, '', [<{'running': <false>, 'state': <'Launching'>}>]), 'previous.rhythmbox.desktop': (true, '', []), 'volume': (true, 'i', [<0.46783116740198283>]), 'root': (true, '', [<{'title': <'Sound'>, 'accessible-desc': <'Volume (71%)'>, 'icon': <('themed', <['audio-volume-high-panel', 'audio-volume-high', 'audio-volume', 'audio']>)>, 'visible': <true>}>]), 'play.rhythmbox.desktop': (true, '', [<'Launching'>]), 'play-playlist.rhythmbox.desktop': (true, 's', []), 'next.rhythmbox.desktop': (true, '', [])},)
ApportVersion: 2.14-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Apr 3 20:28:22 2014
InstallationDate: Installed on 2014-03-28 (6 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140323)
SourcePackage: indicator-sound
UpgradeStatus: No upgrade log present (probably fresh install)

[Rael Gugelmin Cunha (rael-gc)]

Hm, I just realized now that all 3 buttons are not working (previous, play, next).

[Lars Karlitski (larsu)]

When you say nothing happens, do you mean that rhythmbox doesn't start at all or that it starts but doesn't play any music?

Can you launch Rhythmbox normally via the dash or the launcher? Do you have the MPRIS plugin enabled?

[Rael Gugelmin Cunha (rael-gc)]

Hi Lars, thank you for your fast response!

I can be started normally, even clicking in the "rhythmbox" entry in the indicator-sound menu.

MPRIS plugin was not installed. The package "rhythmbox-plugins" was not installed.

I installed, and now, all working fine!

So, sorry if I'm wrong, but appears that "rhythmbox-plugins" package is missing in default 14.04 install.