I use the command below: lame --mp3input --preset 30 input.mp3 output.mp3 Thank you! On 9/11/13, Patrick Wiseman <pwiseman@gmail.com> wrote: > On Wed, Sep 11, 2013 at 4:48 PM, Long Wind <longwind2009@gmail.com> wrote: >> the mp3 file is too big, 128kbps >> I want to reduce it to 40kbps >> >> Thanks! > > I use lame to reduce stereo mp3 files to mono; it (as one might > expect) halves the filesize. > > Patrick > > > --