audio/mp3splt - The NetBSD Packages Collection

Mp3Splt is a command line utility to split mp3 (VBR supported) and
ogg files selecting a begin and an end time position, without
decoding. It's very useful to split large mp3/ogg to make smaller
files or to split entire albums to obtain original tracks. If you
want to split an album, you can select split points and filenames
manually or you can get them automatically from CDDB (internet or
a local file) or from .cue files. Supports also automatic silence
split, that can be used also to adjust cddb/cue splitpoints.
Otherwise if you have a file created either with Mp3Wrap or AlbumWrap
you can extract tracks just in few seconds.