In 2007 a paltry 3,073 audiobook titles were produced and this figure rose exponentially to over 12,000 published in 2011. In 2013 many industry experts proclaimed that over 20,000 audiobooks were now available and in 2014 over 35,000 were released by major publishers and companies like Audible. The global audiobook industry is currently worth 2.6 billion dollars and part of the reason why we have seen a dramatic increase in profitability is due to digital. In a recent New York Times piec...