Oh, I am happy I found this. Like hanging out at FNAC all day, without the overheated french mall and annoying plastic smell. You may not be able to play music in a store or restaurant without paying each and every artist royalties (French law) but you can play any song you like for free on the internet in your own home.
The French: they're nothing if not contradictory.
Go to Deezer to listen to all the music you want for free. Whoopie!