Phill Jupitus, right, watches Roger Daltry accept an award. But do we need knowledgeable music presenters like Phill on the radio any more?

The most compelling reason for music radio can be the musical knowledge that you get from a good informed presenter. Even when playing a song you know and like, a great music DJ can add more information to make your enjoyment increase.

Which appears to be the plan with SpotDJ, which Eric Rice points me toward. It’s a way that you can record knowledgeable ’spots’ which iTunes can slot in for users playing those songs, making your music collection closer to a radio experience. But without the radio. Click the ‘play’ button on the front page to have a listen.

Of course, you still need to own the song. So this doesn’t replace the thrill of hearing a new song you’ve never heard before. But it does go a long way to getting the companionship you enjoy with the radio. Except now you can turn the DJs on and off.

One to watch, perhaps?