Subscribe to the home-made RSS feed for the NEJM Audio. This way you will get notified automatically when new MP3 interviews with study authors are published:http://feeds.feedburner.com/NEJMAudio (via KidneyNotes)
Update:
NEJM publishes its own podcast feed now:
http://podcast.nejm.org/nejm_audio_interview.xml
It is about time the NEJM and the other members of the "big five" provided clearly visible RSS feeds, so doctors will not have to engineer work-arounds.
The list of all MP3 files published on NEJM is available on MSN Search.
Update 12/10/2006:
Most medical journals have prominent RSS feeds now.
References:
New England Journal of Medicine Audio Feed
How to Turn a Search into a Feed. KidneyNotes.com.
NEJM RSS Feed for Image of the Week
Image source: sxc.hu