You don't even need to hear the words to those songs and you know exactly what song is being played. Maybe some of those you missed, but I'd be willing to bet every single one of you knows at least ONE of the songs in that little medley.
How do you know it that well? How do you know a song so well that you can recognize it without hearing any of the lyrics? The answer is hopefully obvious: you probably have heard that sucker at least 20 times!
Have you ever caught yourself wondering why you can't hear the voice of God? Maybe it's because you haven't spent that much time listening to, really getting to know, the voice of God. Have you considered that you don't hear God's voice simply because you don't know it that well?
2 Timothy 3:16 reminds us that all scripture is God-breathed. Every bit of scripture comes from God. If you want to hear from him, read the bible!
Hope that encourages you a little bit :)