The Quran is available in audio book format through Audible in multiple translations (and differing price points), iTunes and free of charge through various websites. Some additional companies that offer audio renderings of the Quran are Clear Quran, Quranful and Meaning of Quran.
Audible is a subsidiary of Amazon, and offers a wide selection of Quran translations. ITunes has a similarly large repository of religious audio books as well, again at varying prices. Clear Quran includes links to a hard copy and contact information, while Quranful contains an English and Arabic translation. Meaning of Quran features a plethora of additional study resources on their website.