Android and iOS mobile apps for JB Hi-Fi's streaming music service NOW appeared back in April. Windows Phone 7 users can now feel the love too, with a dedicated WP7 app.
I only realised the app had appeared when JB Hi-Fi mentioned it during its annual results; according to the Windows Marketplace, it was actually released in mid-June. The app itself is free, but you need a paid NOW subscription to use it.
JB Hi-Fi NOW [Windows Marketplace]