sound and video recording

A software (with source) that runs at bacground in order to record whole sound and video (played on computer) including Video/Voice over IP at system level, without preventing the normal usage of sound and video devices. * Should record the screen (full or active Window) * Should be written with delphi. (may be activex) * should have start/stop/pause recording options * should have general configuration options such as codec, output format(wav,mp3,avi,mpeg), output filenames, recording duration, input device selection etc. These options will be detailed in the future with the bidders. I dont have exact idea about the buget. Bidders should give detailed explanation about their bids. The bidders should give refferences about their experiences on the subject. Demo applications would be good.