Determine duration of an mp3
Print duration of an mp3 (format min:sec)
mp3info -p "%m:%s\n" Multiverse/Mutliverse.mp3
Note, the length is in integers, so fractions of seconds are not displayed.
Compiling for Cygwin
Get ftp://ftp.ibiblio.org/pub/linux/apps/sound/mp3-utils/mp3info/mp3info-0.8.5a.tgz
apt-cyg install libncurses-devel
tar xfvz mp3info-0.8.5a.tgz
make
make install