Clear Channel must have decided that iTunes has infringed enough on the radio industry, so on Tuesday, they’re testing free music video downloads. If the service goes live, the plan is for ad-supported VOD through various radio websites and would complement a strategy to offer podcasts. Clear Channel owns about 1,200 radio stations across the country and is looking to expand presence on the web through video and podcast offerings. Clearly,that sounds like a good idea, since we haven’t listened to the radio all that much lately.