The filenames on those DLLs tell us that these dynamic link libraries were licensed for redistribution by a company known as Clearsand Corporation. I believe the company was originally known as Strata Inc. If I recall correctly, they developed some sort of multimedia authoring product. My guess is that you have their software installed on your system and that they installed our DLLs onto your system.
To be sure, we'd have to examine the DLLs themselves. If you'd like to send them to us, feel free to do so. We'll verify that these are our DLLs after receiving them.
Best regards,
Bill