On Jul 8, 2010, at 2:30 PM, Phil Turmel <pturmel-webdev at turmel.org> wrote: > > Command line: you probably want sox. You can downmix from stereo to mono, resample if you don't need high freqs, and then encode to just about every audio format available. > Just want to repeat the point about mono. It'll cut your file sizes in half, no matter which format you go with. As far as format, I guess it depends on your purpose. If it's to just share memories, mono mp3 will go a long way. If you think family members will want to download and store the recordings, lossless compression of some sort may be the ticket.