@io18
don't you have any executable or .inf file among your files ?
if you have a .inf, right-click it and select 'install' in the context menu
if you have a .ax file, you can try to copy it to your windows\system32 directory and then start-->run , type
Code:
regsvr32.ax your_ax_file
if you have neither of those, maybe you could give us a description of those codec files (where did you got them etc) and a list of these files