   Webcamera DLL ?
  Is there a DLL somewhere for webcam and sound.Thanks Nikko...   
  DirectShow can access a webcam reasonably easily.  If you need more specific advice you are going to have to provide details on what you are trying to achieve (specifically, platform, language, etc.)Alan   ;  There is also OpenCV witch among other thing can capture webcams. And there is OpenAL for sound witch is simply and nice for 3D audio. They are all opensource and multiplataform.   