The share of Americans who use Internet audio monthly has tracked closely the share who have broadband access, but the share using Internet video has not.

Here’s a chart I created from the data in the report. The blue line is broadband adoption, the red line is audio and the green line is broadband. Click the chart for a larger view.

This extraordinarily clear message can be found in the Arbitron/Edison survey released last week. It puts the lie to the idea coming from Los Angeles that potential broadband users are waiting around for copy-protected video content before they sign up.