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I'm having this issue with my music player (Rhythmbox Music Player) on my Linux (SL)

it says:

Couldn't start playback
Your GStreamer installation is missing a plug-in

I have all plug-ins installed on my system

[alexus@wcmisdlin02 ~]$ yum list gstreamer-plugins-*
Loaded plugins: refresh-packagekit [Errno 14] PYCURL ERROR 7 - "couldn't connect to host"
Trying other mirror.
Installed Packages
gstreamer-plugins-bad-free.i686                                                                                0.10.19-2.el6                                                                   @sl                                          
gstreamer-plugins-bad-free.x86_64                                                                              0.10.19-2.el6                                                                   @anaconda-ScientificLinux-201107271550.x86_64
gstreamer-plugins-bad-free-extras.i686                                                                         0.10.19-2.el6                                                                   @sl                                          
gstreamer-plugins-bad-free-extras.x86_64                                                                       0.10.19-2.el6                                                                   @sl                                          
gstreamer-plugins-base.i686                                                                                    0.10.29-1.el6                                                                   @sl                                          
gstreamer-plugins-base.x86_64                                                                                  0.10.29-1.el6                                                                   @anaconda-ScientificLinux-201107271550.x86_64
gstreamer-plugins-good.i686                                                                                    0.10.23-1.el6                                                                   @sl                                          
gstreamer-plugins-good.x86_64                                                                                  0.10.23-1.el6                                                                   @anaconda-ScientificLinux-201107271550.x86_64
Available Packages
gstreamer-plugins-bad-free-devel.i686                                                                          0.10.19-2.el6                                                                   sl                                           
gstreamer-plugins-bad-free-devel.x86_64                                                                        0.10.19-2.el6                                                                   sl                                           
gstreamer-plugins-bad-free-devel-docs.x86_64                                                                   0.10.19-2.el6                                                                   sl                                           
gstreamer-plugins-base-devel.i686                                                                              0.10.29-1.el6                                                                   sl                                           
gstreamer-plugins-base-devel.x86_64                                                                            0.10.29-1.el6                                                                   sl                                           
gstreamer-plugins-base-devel-docs.noarch                                                                       0.10.29-1.el6                                                                   sl                                           
gstreamer-plugins-good-devel.i686                                                                              0.10.23-1.el6                                                                   sl                                           
gstreamer-plugins-good-devel.x86_64                                                                            0.10.23-1.el6                                                                   sl                                           
[alexus@wcmisdlin02 ~]$ 

the only packages that are missing is devel packages... any ideas?

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What type of file are you trying to play? – Patches Nov 15 '11 at 4:06
mp3(mpeg), trying to stream music from – alexus Nov 15 '11 at 17:49
up vote 1 down vote accepted

this is what was missing...

[alexus@wcmisdlin02 ~]$ sudo tail -1 /var/log/yum.log 
Nov 15 12:43:38 Installed: gstreamer-ffmpeg-0.10.11-1.el6.rf.x86_64
[alexus@wcmisdlin02 ~]$ 
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