lasloo said
I loved Great Courses lecture on Genesis and of course, I love Ehrmans Great Courses as well. However, his courses are a little more broad than what I’m looking for. I really want something that covers the gospel of Mark verse by verse and breaking it down like Ehrman would, giving a detail analysis both literary and textual.  Any thoughts?  

I can’t help you with an audio book.  My perception is that scholarly texts are rarely turned into audio books.  That said I do have an MP3 CD audio book of Prof Ehrman’s Forgery and Counterforgery, so it does happen.

But I can very highly recommend Joel Marcus’ two volume Yale Anchor Commentary on the Gospel of Mark.  That will keep you busy for months if not years.