The default Gnome player (Totem and Totem Mozila plugin) under Fedora core7 can not play any of the other formats except the Ogg-formatted audio and video, here is a solution
Totem is a player based on the latest Linux multimedia architecture GStreamer, so to enable him to support playback of various formats, first of all, to install the corresponding GStreamer of the various libraries, as follows:
1, Gstreamer-ffmpeg
2, Gstreamer-plugins-bad
3, gstreamer-plugins-ugly
Installation steps
Install Yum Source
RPM-IVH http://rpm.livna.org/livna-release-7.rpm
Install Gstreamer-ffmpeg
Yum-y Install Gstreamer-ffmpeg
Install the corresponding decoder
Yum-y Install Gstreamer-plugins-bad
Another set of decoders
Yum-y Install gstreamer-plugins-ugly
At this time the online songs are free to play.
(In fact, MPlayer browser plug-ins are also very good, we are interested can also try, hope that it will become the Linux default player! )