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)
NEJM publishes its own podcast feed now:
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.
Most medical journals have prominent RSS feeds now.
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