I commend the BBC Choral Evensong. See and hear it here.
This week, the 25th of January, Evensong for the Conversion of Saint Paul is recorded from Birmingham Cathedral.
A delight.... you will need Real Player installed to hear this.
From the choral page click on the radio player button in the top right hand corner. Wait a moment and if you have RealPlayer installed with a plugin on your internet browser, you should start receiving the current broadcast. Click on the hyperlink that says Choral Evensong under Most Popular Shows and it should swithch you to the recorded evensong.