Thank you for your question!
Elecard MPEG-2 Decoder and Streaming PlugIn for WMP is very well tested by hundreds of thousands of our end-user customers
Let us pay your attention, that this plug-in is intended for end-users to playback local files or streams over network primarily in Windows Media Player.
For your very task, i.e. development purposes - please use Elecard Codec SDK G4, which is available from the following link:http://www.elecard.com/products/products-pc/sdk/codec-sdk/
The full version of this SDK contains detailed documentation and all components interfaces description, as well as sample applications in source codes, which will help you a lot in building your solution.