Rpk extension is related to RadLight Media Player Skin. You have chance to open rpk files with RadLight Media Player software.
It is a theme file which created for a video player called RadLight. To install this format, you should download various themes from the radlight web page and put them into program folder. To get detailed information and check the themes, please check the following link for radlight.
What to use rpk
RadLight Media Player
which page related to rpk file
rpk Related Searches
You can check related links about rpk fileextension.