Internet radio is running on terrestrial radio’s coattails, according to a report by market research company The NPD Group. The Q4 2012 study, which surveyed US consumers ages 13 to 35, found that AM/FM radio is still the primary method for music listening, cited by 24% of respondents. However, internet radio is just behind with a 23% share. CDs fell to account for a lowly 9% of music listening, and satellite only accounted for 5%. Read the rest at eMarketer.