OK thanks for your answer.
I have already iTunes (i never use it but well my spouse has a Ipad...)
When i right-click on a mp3 file i don't get this option "make mp3" (It s already an mp3 but ok) only "play with...".
I stopped patching after GTW, waiting to buy next EP spa, i am always cautious with patches, if my game is running i am fine. (I didn't buy ITF for Sims3 and so stopped at the patch for IP, same)
So i will wait, thank you for your time