Visiting a website is interpreted as audible music (could be a plugin that plays the music while you visit sites).
Colors within an html document represents different tones.
The types of content being transmitted represent different instruments. html, css, javascipt, images, flash, pdf, etc.
The bandwidth speed represents the metronome/speed of the music.
Javascript libraries represent different rhythm patterns: jquery, mootools, etc.
CDNs represent different instruments: amazon, akamai, limelight.
External resources and APIs represent sounds.
As traffic is brought through the network adapter, a listener passes the type of information to the synthesizer that analyzes the type of traffic then outputs the appropriate music.
I assume at first it will all sound like garbled non-sense, so there would be some need to map each entity to a certain type of instrument/sound to make it somewhat musical.
Worth building?