Dunne became involved in radio, initially presenting a nighttime contemporary Irish music show called Totally Irish on 98FM, taking over from Jim O'Neill . He moved to early evenings on 98FM before moving to the newly operating national radio station, Today FM in 1999, where he presented his show, "Pet Sounds" from 7.00pm to 10.00pm every Monday to Thursday. The show itself quickly became known and well-regarded among various music fans in Ireland for playing a mix of alternative, indie rock and new music and frequently aired songs before they received mainstream radio airplay.