Hi there,
the following problem: I downloaded a self-produced song on itunes via my pc at home on my i phone. Now I want to pull the song down on a friend's PC and convert it to MP3. The problem is that the song is not recognized and is grayed out when the i phone is connected. Next to it is a gray ring.
Not possible, just with a jailbreak
You can't sync music "backwards" with iTunes…
You can only convert the title as an original file into MP3 via iTunes… Transfer it to another PC via e-mail, data stick or cloud… Import it to iTunes there… And synchronize it on an iDevice there…
There used to be the SHAREPOD program… With which the content of an iPod / iPhone could be synchronized backwards… I never needed it… But only read good things about it…