Because stereo wavs take up more space than mono, I've always tended to
email mono files if the file is from a mono source (eg voice-over). This
has affected how my projects are set up, which panning law I use etc. I
just discovered that MP3s of the same content are the same size, mono OR
stereo. Huh? Now this I could perhaps understand if there is no difference
in the content of each channel (still a mono source) but it seems to be the
case even if there originally is stereo content.