Audiobook streaming service Storytel reported 4th quarter and full-year 2019 results along with 2020 guidance on February 20, showing continued double-digit growth powered by aggressive investment in new markets. Net sales for Q4 2019 totaled 565 million SEK ($57.7 million), up from 436.6 million SEK ($44.6 million). Meanwhile, the company’s quarterly loss before tax was…