Sudhian Media has posted an article on audio compression

Trying to transmit audio data with uncompressed audio or video is not the easiest task. After all, even an audio CD contains data that transmits at 1400kb/s, a fairly large chunk of data, more than many compressed DivX movies. The ability to stream that kind of data is one reason why there
has been an increase in the bandwidth of wireless networks within homes, or the addition of things like gigabit LAN to many new motherboards as a standard feature. The joy of digital audio is that there are many different ways to decrease the amount of space required to store it, depending how signals are represented.[/quot€]
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