Create lag in system audio

[helpdesk98]

I am looking for a way to make my system audio lag about 3 seconds. I am using Chrome cast to stream on demand video from my cable provider that runs on MS silverlight which is not currently supported by chrome cast. I cast my whole screen which allows video to play, however chrome cast dose not support audio in this mode. So i am looking for a way to make my system audio in windows 7 lag. any ideas?