SystemSound doesn't play on device (iPhone)

I'm currently developing an application for iPhone and I would like to play a sound when the user touch a button.

When I use a .mp3 audio f开发者_如何学运维ile, the sound plays on the simulator but won't on the device. When I use a .tif audio file, it plays on both of them, but the quality isn't really good.

So my question is, is it possible that my .mp3 isn't compressed in a good way ? How should I encode it to make it work on my device too ? How to encode my mp3s in .tif with no quality loss ? (and without taking too much disk space)

Thanks in advance.

I think you use .aac format then it's decrease disk spaces,and you only increase the volume of the player. if you specify using player then I help more about that.