Foundations of the Deen: Islam, Iman, & Ihsan by Zaid Shakir and Abdullah Ali.
This is a 5-CD set from the Zaytuna Institute which cover the topics mentioned in the hadith of Jibril, islam, iman and ihsan.
The speakers did a good job of balancing a scholarly treatment of the topic with an engaging mix of beneficial sidetracks.
The sound quality was good. My purchase was without difficulty and the item arrived quickly.