[3][4] On 19 January 2004, SEN 1116 launched onto Melbourne's airwaves, with former AFL footballers Garry Lyon, Tim Watson and Billy Brownless heading the station's "Morning Glory" breakfast show, Richmond Football Club premiership player Kevin Bartlett in mornings, Radio National's Francis Leach in afternoons, and Dermott Brereton and Anthony Hudson in drive.

However, while the station remained flat in Melbourne, ratings dwindled in Adelaide; despite gaining coverage of the New Zealand cricket tour of Australia and the 2005 VFL season, Sports Entertainment Network entered voluntary administration, citing $3.5 million in losses.

Former ABC commentator Gerard Whateley joined the station as chief sports caller and mornings presenter, with Kevin Bartlett moving to the drive show following the departure of Harford.

[15][16] In April 2018, parent company Pacific Star Network merged with sports media business Crocmedia,[17] most notable for producing the AFL Nation broadcast call heard across regional Australia.

In July 2019, SEN has partnered with Crocmedia has purchased 23 narrowband radio licences across Australia including Sydney, Brisbane, Perth, Gold Coast, Darwin and Alice Springs.

On 17 October 2021 SEN Top End launched on 1611 AM Narrowcast broadcasting coverage of the Northern Territory Football League, horse, thoroughbred and greyhound racing.

On 7 July 2021 SEN Hobart launched on 1629 AM Narrowcast providing coverage of several local and national sports such as Cricket, AFL, horse, thoroughbred and greyhound racing.

On the 3rd March 2021 SEN Gold Coast launched on 1620 AM Narrowcast providing coverage of several local and national sports such as Cricket, AFL, horse, thoroughbred and greyhound racing.