A Public Market for Public Music | Linux Journal: I’m wondering about a project name and description. Right now I like Project Pay4Play, or p4p. With p4p tools, I should be able to say “I’ll pay for that” when I hear a song or a program I like. I want to be able to do this with any podcast or stream that I hear on my browser, my mobile phone, my PDA, my iPod, my iTunes — even my car radio. [I like the idea, but I don’t understand the value proposition.]