Hi Screetch.
I record my podcasts using an Olympus Digital Voice Recorder:
Olympus DS-55 Digital Voice Recorder: Amazon.co.uk: Electronics & Photo
You can listen to the later podcast recordings, done with this recorder, here:
Flying Podcast
The Y splitter I mentioned earlier, from Aircraft Spruce, works fine with David Clark headsets:
HEADSET ADAPTERS AND EXTENSIONS from Aircraft Spruce