Listening figures for Radioplayer, the online listening partnership between the BBC and commercial radio, show 5.7 million unique users have used the service over the last four weeks.
Between them, they have launched 22.5 million listening sessions, as UK Radioplayer Managing Director Michael Hill encourages more stations to join in.
Radioplayer now has 238 stations, up from 157 at launch just eight weeks ago, and many more signed up to join in the coming weeks.
The news comes as Hill talks to eRADIO and invites any stations not already thinking about joining the service, to get in touch.
“Growing digital radio is a long game, but we now have two magic ingredients. A simple, consistent Radioplayer with millions of users, and an industry working collaboratively on its digital future. It’s a great start,” said Hill.
Andrew Harrison, Chairman of Radioplayer commented: “This is a really encouraging first set of figures for Radioplayer as it starts to grow a solid listener base. We look forward to building on this very positive foundation to create something that serves both industry and listeners alike.”