Los Gatos-based SonicSwap said today that it has acquired, a Web 2.0 RSS music news service based in Boulder. earFeeder provides a service that creates an RSS feed, using a users's iTunes listening habits to determine which music news a user would be interested in. SonicSwap said it has integrated the earFeeder features into its playlist sharing site. Terms of the acquisition were not disclosed. earFeeder was a project of David Cohen, a Boulder-based entrepreneur, who sold earFeeder shortly after the project launched.