Pick something she likes and you know she likes and strike up a conversation about that. Like if she likes a certain band listen to their latest CD and then ask her if she's bought it yet. If yes she'll discuss this common interest with you, if no, offer to lend it to her then say something like I will try to catch them live when I can, we could go together? etc and take is slowly and sweetly. This is nice, just go with it, she won't think you're odd if you keep it borderline friendly/ interested.