Complex sentence: On October 7,2008, Clear Channel Radio launched the first version of the free streaming radio application known as iHeartRadio to the Apple iPhone and iPod Touch through the App Store; only 12 radio stations in 8 markets were included in this first release.
Split into simpler sentences: On October 7,2008, Clear Channel Radio launched the first version of iHeartRadio to the Apple iPhone and iPod Touch through the App Store. Twelve radio stations in 8 markets were included in this first release.