Even if you can't hear the difference, the sizes are completely different: A story about wav and mp3

Last time, we talked about incorporating inaudible frequencies into music. This time, I'd like to talk about the sound files ...
Ars Technica

Software to downsample wav/mp3 files into low bitrate WAVs?

I'm interested in implementing an audio output for a microcontroller and so I need some really crappy wav files to play with so I can try to PWM them out to a speaker. So I'm looking to produce an ...