Which songs are m4p?
I have 2000+ songs. A few hundred were purchased.
The purchased songs are m4p - copyright protection - and can't be imported to a 'play-along' app such as music training or karaoke.
I don't want to strip away the m4p copyright protection ... I want to identify which songs are purchased within iTunes (Mac) so I can make a separate playlist for non-purchased (MP3) music which I can import wherever.
Otherwise it would take hours to sort them out by hand and that would only encourage people to purchase 'unlock' apps instead.