In building these new stations DMG Radio needed a "simple, focused music concept that would appeal to the 35-54 audience," according to CEO Cathy O'Connor. Nova Entertainment announced the change to Vega's brand as the stations had struggled towards the bottom of the ratings ladder in both Sydney and Melbourne. On Friday 12 March 2010 Vega rebranded with the name Classic Rock to counteract similar stations Gold 104.3, WSFM, Triple M Sydney and Triple M Melbourne. Koffee was rebranded to smooth Chill with a chill easy listening format and NovaNation ceased broadcasting online by mid-2016.
On 24 December 2013, NovaNation and Koffee both ceased broadcasting as DAB+ stations. These stations were launched as part of the introduction of DAB+ digital broadcasting in Australia's major state capital cities. In April 2009, DMG Radio Australia launched two new digital radio stations: NovaNation, a 24/7 digital dance station and Koffee, a chillout music station. In September 2004, DMG Radio Australia sold most of its regional radio stations to Macquarie Bank, keeping only Hot 91 Sunshine Coast (later sold in early 2005) and Star 104.5 in Gosford, which they still own and operate. The company grew rapidly to over 64 radio stations across New South Wales, Victoria, South Australia, Queensland and Western Australia under the Star FM, Hot FM, Nova and Vega (now Smooth) brands.
The founding Chairman and CEO were Charlie Cox and Paul Thompson respectively. This was shortly followed by FIVEaa on 26 September 1996. Nova Entertainment was formed in early 1996 under the name DMG Radio Australia, followed later in the year with the A$46M acquisition of 85% of the Broadcast Media group of regional stations.