15. The article of manufacture of claim 14 , wherein the output from the listening component is a data stream having the same format as the input to the listening component.
15. The article of manufacture of claim 14 , wherein the output from the listening component is a data stream having the same format as the input to the listening component. 17. The article of manufacture of claim 15 , wherein the medium further includes instructions that, when accessed by a processor, cause the computer to perform operations comprising: providing the output from the listening component as input to a second listening component.