Wireless Music According to an IDC study, U.S. wireless music services will have over 50 million users and generate more than a billion dollars in ’10. By the end of ‘06, the number of U.S. OTA customers, those with the ability to download and install content over a wireless network, will be approximately half that of online music service users, but may surpass them by ’10. 22% of survey respondents indicated they would buy at least one track from their service provider within the first 3 months of availability. 8% of respondents age 25-44 indicated they would buy 4 or more. (Center for Media Research 7/12/06)