"Ethan Winer" ethanw at ethanwiner dot com wrote in message ...

I loaded a .wav file that was 3 megabytes

How many seconds long was it? A stereo Wave file occupies about 10 MB per
running minute at 44.1 KHz and 16 bits, so a three minute song uses about 30
MB.

A lot of people don't know that you can rename an MP3 file to have a .wav
extension and, amazingly, it will still play in many programs such as
Windows Media Player. So if your original Wave file was a full song in only
3 MB, that's why it was so small.

The original WAV file was almost five minutes long, so maybe you're right
(that it might have actually been an MP3 file that was named as a WAV).
Is there some kind of test to determine for sure?