Double-Click on the file that you downloaded.
File name should be Cole2k.Media.-.Codec.Pack.V6.1.0.-Standard-.32Bit.Setup

When the installation program starts, follow the instructions.
Select the simple Easy install... NOT Advanced !
You don't need the toolbar so be sure to 'un-check' the box...

When it's all finished installing - It's very quick - you'll see a note saying that it's done.

Shutdown your computer.
Start your computer.

There is nothing else that you need to do and almost nothing that you CAN do with it...
Not necessary as it's all automatic.
When you next try to play something, the CODECs are installed and should be working perfectly.

OK ?