Recording of Transmission / Audio Logger for JACK
http://www.aelius.com/njh/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.

Rotter can output files in servaral different strutures, including all files in
a single directory or create a directory structure.The advantage of using a
folder hierarchy is that you can store related files in the hour's directory.