Don't know any audio books, but the RunAsRadio podcast sometimes has SQL Server topics (and often has interesting non-SQL topics) and, to a much lesser extent, does DotNetRocks. http://dotnetrocks.com and http://runasradio.com
Audio+video, there's the SQLBits session downloads, you can usually get a good overview with just the audio if you're driving. http://www.sqlbits.com/
They're what I use when driving, shopping or standing in queues.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability