Rob Aronson, Vice President of Search Engine Marketing for Avenue A Razorfish spoke to WebProNews for an interview about their Super Intelligent Link Crawler. (SiLC)

Seventy-two percent of online adults in the U.S. listen to audio content on their home computers, according to a new study by the Consumer Electronics Association (CEA) "Computer-Sourced Audio Consumption."

Google Earth has always been about visuals – interesting sights, but pretty much no sounds.  That recently changed with the introduction of a new layer from Wild Sanctuary.  The layer features “the sounds of nature” recorded at all sorts of places and times of day and night.

There are a few details about Google’s foray into radio advertising that make it sound like an idea worth trying.

Online retailer Amazon.com has purchased Brilliance Audio, the largest independent publisher of audiobooks in the U.S.

Amazon says the acquisition will expand the number of books produced in the audio format giving customers a broader selection of audiobooks.

Amazon subsidiary CustomFlix now supports both standard CD and MP3-CD audiobook formats through its Disc on Demand service.

Google has expanded their advertising system by announcing that Google AdSense for Audio is now supported by major radio station systems. Providers include Broadcast Electronics, ENCO Systems and LAN International’s Viero.

"With AdSense for Audio, we’re committed to bringing new advertisers and new dollars to radio," said Jim Woods, Director of Product Management, Google.

"Support from premier partners like BE, ENCO and VIERO is a major step towards allowing all radio stations to gain access to this new and complementary revenue channel."