Audio logging tool, rotter

Rotter is a Recording of Transmission / Audio Logger for JACK. It was designed for use by radio stations, who are legally required to keep a recording of all their output. Rotter runs continuously, writing to a new file every hour. It is released under the GPL license.

rotter home page

EXAMPLES

      rotter -a -f mp3 -d 1000 -b 160 -v /var/achives

      Start logging audio to hourly files in /var/archives. Rotter will
      automatically connect itself to the first two JACK output ports it
      finds and encode to MPEG Layer 3 audio at 128kbps. Each hour it will
      delete files older than 1000 hours (42 days). Verbose mode means it
      will display more informational messages.

Live Recorder is another option. Perhaps you should check it in Liverec home page(archived)