When I wrote radio - I meant generally 'something with a speaker' because irrespective of what 'radio stations' do - playing music on 'something with a speaker' from CD, iTunes, MP3s etc. on your lawn, in your car, on the beach, while at work - is extremely common - and does not constitute a 'public performance'.

You're basically implying that 'everyone is breaking copyright all the time' which is a spectacular claim unsupported by the case law which I presented to you.

You'll have to provide some basic logic and hopefully evidence to support the claim that someone playing music for themselves and even a couple of other people they are engaged with is a 'public performance' because at it stands there's no reason to believe that.