The apparatus 2 wherein the server computing device is configured to use RTSP and RTP protocols to transmit the virtual file that plays the second advertisement portion in response to {HEAD ~ a request} to skip {TAIL ~ the second advertising portion} of the digital file 
to skip
The apparatus 2 wherein the server computing device is configured to use RTSP and RTP protocols to transmit the virtual file that plays the second advertisement portion in response to { HEAD ~ a request } to skip { TAIL ~ the second advertising portion } of the digital file
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH