need help about installing multimedia codecs on fedora15X 86-64

Sir I have installed fedora15X86-64 on AMD FX 4100 machine. I need help about installing multimedia codecs. I have followed instructions given in some sites but failed. I have downloaded fusion packages from net and tried to install and they are reporting that atleast fedora17 is required.

Please suggest a procedure to install multimedia codecs on fedora15.


Regards,
Rupesh.