By April Miller The audiobook sector is perhaps one of the most popular and fastest-growing segments of the publishing industry. Audiobooks, in the past, were not as much of an attractive investment for indie authors and trade publishers as they are today. The costs of producing, shipping, and creating tapes or CDs were high. Moreover, some books had to be shortened to fit … [Read more...] about Guest Post: The Indie Author’s Ultimate Guide to Self-Publishing an Audiobook