Looping and paning my sound!

[SpaceGhost]

I searched the forum but couldn't get a great answer. I'm a real beginner to programming so this question is probably easily answered.

	SystemSoundID ssid;
	NSString *paths=[[NSBundle mainBundle]resourcePath];
	NSString *audioFile=[paths stringByAppendingPathComponent :@"sound.caf"];
	NSURL *audioURL=[NSURL fileURLWithPath:audioFile isDirectory:NO];
	OSStatus error=AudioServicesCreateSystemSoundID((CFURLRef)audioURL, &ssid);
	if(error){NSLog(@"Audio error");}
	else{AudioServicesPlaySystemSound(ssid);}

This is the code snippet I'm using to generate sound, my sound is a 20 second caf file that I'd like to loop. How do I loop it? And can I pan it also? Is this a good way to implement sound in my app?

Thanks guys!

[SpaceGhost]

Can somebody please help me!