PC software will be much cheaper than a module.
There are freebies..and of course there is Powertracks, my personal one-stop does all sequencer that handles midi and audio really well.
It's at
http://www.pgmusic.com/powertracks.htm for under $50. I do beta testing for them for every new version. Done that for a lot of years and think it's a pretty good recording software/sequencer. Everything that comes out of here is pretty much done in Powertracks one way or another..