What camera for concerts?

If your in the crowd what type of camera are you allowed? I know you will get told off if you use a big canon or nikon as they think your a professional

Added (1). Can't use phone because its a *** blackberry that changes the colour and blurs everything

Just bring a small camera or your phone if you're in the crowd. You can't get good pictures from the crowd anyway. You only need it for pictures of your friends or in case you get to meet the band after. I used to bring my Leica film rangefinder to concerts and try to take pictures of the stage like I was getting away with something, but they still turned out horrible with people's heads in the way. You have to be 8 feet tall to get anything good of the stage.

First of all, you may not be allowed to bring a camera into the venue, I'd check first.
You might get away with smuggling it in, but personally I hate the possibility that I might either have my camera confiscated, or I won't be allowed inside.
Next problem is that concerts are a low light situation, usually also coupled with much movement as well as a fair distance from the subject.

All up, that makes it EXTREMELY challenging. The only hope of half decent concert photos are good DSLR cameras and even for those you need very good and very FAST lenses.

Small P&S cameras have tiny little sensors, so they don't do well with low light situations.
Concert photos are often blurry because there isn't enough light, so the shutter speed is too slow to hand-hold it, even worse when you add the movement of the performers to it.

You could try raising your ISO, but that will add noise to your photos.
You could try using your little flash, but it can't reach very far, and won't do you a whole lot of good other than lighting up the back of the heads directly in front of you.

I'm afraid there are a number of good reasons why the pro's carry around huge, expensive cameras, lenses, and lights.
It would be lovely if a tiny camera could do it all, but the reality is that small P&S's just can't handle concert situations very well. Some places do allow small P&S cameras (but no DSLRs). The reason for that is because they KNOW you will never get any decent shot with a little P&S.

However, I do realize that some of us a lot easier to please than others, so perhaps what is totally unacceptable to me might be fine in YOUR eyes.
If you can't have a good camera with you, at the very least make sure you learn how to you use what you have, so you can make the most out of it. Read your manual several times, attend a class, read some books on photography - it will help a lot.
If you're not interested in learning much, at the very least learn how to turn off the flash. Those tiny on-camera flashes only reach a few feet, so all you do with it is illuminate the bodies in front of you.

As to sound - there's a good reason why the audio pros carry around a lot of very big and very expensive gear. Even a good camcorder can only do so much in that regard - let alone a little P&S still camera! Don't expect miracles - don't even expect anything you'd ever want to listen to again.

The only camera that is good to get shots from the crowd is a DSLR. That is why they are banned.

I have a blackberry - if you can't get half decent shots with that then a cheap point and shoot will struggle too.

They usually let you take in a small compact because they know you will not get professional results with it.
If you do use a compact, then keep the flash turned OFF. A flash only works be reflecting light off the subject back to the camera; but you will probably be too far away for that to happen.
If you turn off the flash, then the camera will capture the light being generated from the stage but you will have to keep the camera very steady as it will require a longer exposure.