Its hardly called being a MUSICIAN if you have to ask other people to use their music in your songs. If he was so inspired, he'd cover the songs and make them his own, not use the music and sing over it.
Although its retarded that he doesnt write his music, it was not Lynard Skynard that he sampled in that shitty song, it was Warren Zevon - Werewolves of London.
Its hardly called being a MUSICIAN if you have to ask other people to use their music in your songs. If he was so inspired, he'd cover the songs and make them his own, not use the music and sing over it.