Just found this:

http://www.scheinwelt.at/~norbertf/radiocap_homepage/

This front end allows you to record line in through your sound card to wav, vorbis or lame. We seem to occasionally get people posting on HA looking for such a tool. It also has timer settings so that you can "capture" stuff at a certain time, like a radio program, hence the name.

Hopefully it is useful for someone out there.