The iPhone SDK 2.0 CrashLading example has no sound probelm, In my simulator and device, a lot of developer encounter same problem, below is my solution,


NSString *file = [bundle pathForResource:@"Start" ofType:@"caf"];
NSURL *url =[NSURL fileURLWithPath:file];
SystemSoundID *outSystemSoundID;

AudioServicesCreateSystemSoundID( (CFURLRef) url, &outSystemSoundID );
AudioServicesPlaySystemSound( outSystemSoundID );
AudioServicesDisposeSystemSoundID( outSystemSoundID );


It can play the sound.

Solution 2, if you add below code in your program, you can play the background sound and looping in the code with current OpenAL lib,

//Setup sound engine. Run it at 44Khz to match the sound files
SoundEngine_Initialize(44100);
// Assume the listener is in the center at the start. The sound will pan as the position of the rocket changes.
SoundEngine_SetListenerPosition(0.0, 0.0, kListenerDistance);

SoundEngine_LoadBackgroundMusicTrack([[bundle pathForResource:@"Failure" ofType:@"caf"] UTF8String], true, true);
SoundEngine_StartBackgroundMusic();


Let focus the bug, in my Mac, tracking the bug this happen in below code.


alGenBuffers(1, &outBufferID);
AssertNoOALError("Error generating buffer\n", fail);

check the OpenAL document,
httpss://connect.creativelabs.com/openal/Documentation/OpenAL%201.1%20Specification.htm

Allocation of object names does not imply immediate allocation of resources or creation of objects: the implementation is free to defer this until a given object is actually used in mutator calls. The names are written at the memory location specified by the caller.

End of today, I still don’t know how to create and use “alGenBuffers” function to fix this bug.