I just passed the PMP and now aspire to take the RMP
The material I used from PM Prepcast gave me the confidence and knowledge to pass the PMP, 1st try
My preparation included:
1) Listened to the Prepcast on my iphone (during walks on lunch and/or during commuting to work)
2) I listened in sync with the course material at my local chapter study group, NH
3) Read the PMBOK once
4) took 3 simulated exams and diagnosed each answer wrong and the others I got right by 50-50 chance
5) memorized the table of 42 processes & key formula's for my brain dump sheet (a must have during the exam when you become brain dead in hour 3)

Can anyone recommend similar material for the RMP; particularly a similar pod cast product I can use on my iphone and obtain the required contact hours?