Source: http://www.archive.org/details/lifeofmuhammadmedina

The Life of Muhammad (S): Medina Period 1 of 2 is the second part of a three part series on the Sirah of our beloved Prophet Muhammad (S). The first part covered the Makkan era. This part focuses on the Medina era starting from the Hijrah up until the battle of the Trench. The last part would insha'Allah cover the period between Hudaybiah and the death of the Messenger of Allah. Here, Imam Anwar Al-Awlaki covers the first five years of the Medina era which include the all important events of the Hijrah, the establishment of the first Islamic State, the battle of Badr, the Battle of Uhud, and finally the battle of the Trench.