What are the metaphors in Stereo Hearts?

The entire song is a metaphore for his love being music, this makes it an allegory (an extended metaphor). Although specifec metaphors would be when he says "My heart's a stereo" as his heart is not actually a stereo. Another would be when he says "the last girl who played me left a couple of cracks" because he is refering to himself as a record. There may be more.