If we don't have a video, they ask about an audio version.

An audio version of the book was released on April 1, 2010.

"It all had to be verbal for the audio version."

Audio versions of the first three books were released in November, 2008.

Some more recent systems allow for this by providing an audio version of the characters.

An audio version of the video documentary was released in 1997.

The audio versions of the stories in this collection are spread over several products.

Audio version of Lewis's final message, played at his funeral.

Now a legal battle has erupted over rights to an audio version of the novel.

The audio version was released on March 26, 2012, one day early before the original release date.