Multiple audio sounds in iPhone app?

NSString *path = [[NSBundle mainBundle] pathForResource:@"dream" ofType:@"m4a"];
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
theAudio.delegate = self;
[theAudio play];

/usr/bin/afconvert -f caff -d ima4 sound.mp3 sound.caf

-(void)Play:(NSString*)sSoundFile {
    // play sound file here
}