Play random Sound on shake?

[typhoch2]

Hey I am building a fun app for me and my friends and I have some sound-files. I got my App working on my jailbroken Phone with only 1 sound, if I press the whole screen (1 Button on the whole screen). Now I want it to play a Sound, if I shake the Phone, but instead of that 1 sound play one of my 10 soundfiles.

I don't know how to detect, if the phone is shaking or not. Maybe somebody can give me an Example.

Here is my m-File of my App:

//
//  SoundViewController.m
//  Sound
//
//  Created by blackyE on 16.06.09.
//  Copyright __MyCompanyName__ 2009. All rights reserved.
//

#import "SoundViewController.h"

@implementation SoundViewController
@synthesize soundFileObject, soundFileURLRef;


-(IBAction)starteSound:(id)sender {
	AudioServicesCreateSystemSoundID ((CFURLRef)[NSURL fileURLWithPath: [[NSBundle mainBundle] pathForResource: @"lu" ofType: @"wav"]], &soundFileObject);
	AudioServicesPlaySystemSound (self.soundFileObject);	
}

- (void)didReceiveMemoryWarning {
	// Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
	
	// Release any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
	// Release any retained subviews of the main view.
	// e.g. self.myOutlet = nil;
}


- (void)dealloc {
    [super dealloc];
}

@end