All my songs in iTunes are gone?

Last night my iTunes was fine, this afternoon when I checked on them, everything was gone (playlists, songs, apps). I checked the iTunes folder and under the music folder there was nothing as well. This is getting annoying, and I don't know what to do. All my songs are still on my iPhone.

Added (1). I'm on a Mac Book Pro

Why is my iPhone battery running out so quickly? O?

So I got my iPhone 3GS in April 2011 on a 2 year contract. It's now September 2012 and I have 7 months left. Since the summer the battery has been going really fast, like 1% every minute. It's completely ruined my phone and I keep it turned off all the time now and can rarely use it anymore which Is such a waste of money (my contract is £33 a month or around $60) I'm paying all this money for something I barley use (I check it like a few times a week). I really don't know what's caused this and I used to love my phone and text a lot. Has anyone else experienced this? Can I get a replacement? What's causing it?

Is mistral.co.uk.tc scam site?

While searchinbg for a cheap iphone sheller i found the mistral.co.uk.tc!
They sell cheap iphones branded new and unlocked!
Is scam or its safe seller?
Is anyone who have buy from mistral.co.uk.tc?
Please answer!

How to access all of my Emoji icons?

I just got my iphone 4s and downloaded the Emoji Free app. I added the keyboard and it works fine but only a few of the icons are displayed for me to choose from. Each tab only has about 20 or so to choose from. How do I access All of the icons from the keyboard so that I can use them in my messages etc? TIA