CCCP Insurgent (CCCPI) is a program that is able to detect other playback packs and thus help you (and us) in the troubleshooting process. It has a number of diagnostics features, as well as some power tools to manage DirectShow filters. The only part of it the causual user should be using is the leftmost column, that displays any other codec packs detected on your system. The other parts are probably too obscure to be useful for most users. Tools -> Test render... and Tools -> CRC check... are pretty straightforward, but still mostly useful for people helping others with playback problems. Note that the "Unregister filter" and "Register filter" buttons should NOT be used unless you are very sure about what you're doing.
The products referenced in this site are provided by parties other than BestDownload.com. BestDownload.com makes no representations regarding either the products or any information about the products. Any questions, complaints, or claims regarding the products must be directed to the appropriate manufacturer or vendor.