If you have ever wanted to do an audio ad, now is the time. There’s a discount and, apparently, it’s being rolled out to all AdWords clients. I have been able to use AdWords audio for some time now, and I wish I had known that I was included in the early beta or I’d have made you guys a video. I haven’t actually excercised this right, but I’ll try and come up with something anyway – maybe for the Traffic Reality Relaunch.
From the Clickz news article, Google Introduces Audio Ads to a Wider Customer Base:
“Today, over half of all U.S. AdWords accounts have been given access to Google Audio Ads,” said a Monday posting on Google’s Inside AdWords blog. “And at the end of June, it’ll be available to all AdWords advertisers across the country.”
In an effort to help prospective radio advertisers give Audio Ads a try, Google is offering $400 in Audio Ads credits toward first radio campaigns. To get the credit, customers must use Google’s Ad Creation Marketplace, a directory of ad specialists that help create the 30-second radio spots, and they must launch a campaign by June 30, said Google.
More from Google’s official Inside AdWords Blog:
AM and FM radio advertising may be new for many of our advertisers, so we’ve put together a Beginner’s Guide that cover tips for launching a successful radio campaign. The guide offers information on the types of audiences you can reach, tips on what makes an effective ad, ways you can reach your target customer, as well as budget, tracking and optimization best practices. We’ll be adding to this resource over time, so if you have questions about radio advertising not answered in our guide, please let us know.
The Beginner’s Guide goes into why you’d want to place a radio ad and how to get started. Twitter me if you try it. 
[...] Search Engine Wednesday | AdWords In Audio for All? [...]