ARLINGTON, Va.--(BUSINESS WIRE)--Rosetta Stone Inc. (NYSE: RST), a world leader in technology-based learning solutions, today announced financial results for the first quarter 2015. First Quarter 2015 Overview Year-over-year, total revenues decreased 4% to $58.4 million; total bookings (a non-GAAP financial measure as defined on page 3) decreased 18% to $50.5 million reflecting lower promotional pricing and advertising spending in the Consumer segment and the effects of a strengthening dollar a