Open terminal and type there: ( you must be login with root otherwise try su )
[root@malanch ~]# rpm -ivh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm
This will display like this:
Retrieving http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm
warning: /var/tmp/rpm-tmp.cqf8YE: Header V3 RSA/SHA256 signature: NOKEY, key ID 8fcff4da
Preparing... ########################################### [100%]
1:rpmfusion-free-release ########################################### [100%]
warning: /var/tmp/rpm-tmp.cqf8YE: Header V3 RSA/SHA256 signature: NOKEY, key ID 8fcff4da
Preparing... ########################################### [100%]
1:rpmfusion-free-release ########################################### [100%]
now type :
[root@linux ~]# yum install vlc
and you are done . now you can play any music file (.dat,.3gp,.mpg,vob,avi ) in your linux machine.