Only WebTV users can see these wondrous little things. Audioscopes are one of WebTV's best features. Below is a finished scope complete with music. The code to copy follows.

Change the colors and sizes to suit you. You can add a border if you like. Just type in border=(a number from 1 to 10). Right and leftoffset should remain the same + and - value.
For more information on audioscopes and attributes, drop me a line. I'll point you to the right resources.

<audioscope bgcolor=#000000 height=20 width=300 rightoffset=3 leftoffset=-3 rightcolor=#ff9966 leftcolor=#00cc00 gain=5>