Here are some excellent emergency medicine podcasts to help supplement your learning. They are listed in order from most useful to less useful.
EM Clerkship - Emergency Medicine for Students
By Zack Olson, MD
This is a podcast created by an EM resident in order to help students do well on their clerkship and away rotations. The episodes are 10 minutes long and only contain info relevant to us as medical students. Perfect for study in the weeks before your rotations.