Okay, so "The Eye of the Tiger" they're not, but here for your listening pleasure--at the gym or wherever--are some free, legal-history-related downloads available from iTunes:
Lynn Hunt: Inventing Human Rights, UCTV, UC Santa Barbara, UCTV Audio Podcasts
Suppressing the African Slave Trade: The Limits of Legislation, 1794-1865: Paul Finkelman. George and Ann Richards Civil War Era Center, Pennsylvania State University
Legal History - Session I: Distinguished Adjunct Professor R. B. Bernstein, Professor Annette Gordon-Reed, Professor Rebecca Roiphe, Professor and Dean Emeritus James F. Simon, Faculty Presentation Day 2008, New York Law School
Shaping & Breaking the Politics of Legal History: David Lieberman, Stanford University
Thurgood Marshall Before the Court: Stephen Smith, Kate Ellis. Civil Rights: Voices of a Movement, American Public Media
[They should turn up with a simple search of the iTunes website.]