Relic Tech has been released as an audiobook, narrated by James Conlan.
Currently it can be obtained via Audible.com and Amazon.com. It should be available via iTunes shortly (I will follow up when this occurs).
I will say that James Conlan did an awesome job, and even added a few special features here and there to enhance the listening experience.
Current links where available:
Relic Tech at Audible
Relic Tech at Amazon