#import <Foundation/Foundation.h>

#import <AudioToolbox/AudioToolbox.h>

 @interface PlaySound : NSObject

{

    SystemSoundID sound;//系统声音的id 取值范围为：1000-2000

}

 - (id)initSystemShake;

- (id)initSystemSoundWithName:(NSString *)soundName soundType:(NSString *)soundType;

- (void)play;

@end

#import "PlaySound.h"

@implementation PlaySound

- (id)initSystemShake

{

    self = [super init];

    if(self)

    {

        sound = kSystemSoundID_Vibrate;

    }

    returnself;

}

- (id)initSystemSoundWithName:(NSString *)soundName soundType:(NSString *)soundType

{

    self = [super init];

    if(self)

    {

        NSString *path = [NSString stringWithFormat:@"/System/Library/Audio/UISounds/%@.%@",soundName,soundType];

        //[[NSBundle bundleWithIdentifier:@"com.apple.UIKit" ]pathForResource:soundName ofType:soundType];//得到苹果框架资源UIKit.framework ，从中取出所要播放的系统声音的路径

        //[[NSBundle mainBundle] URLForResource: @"tap" withExtension: @"aif"];  获取自定义的声音

        if(path)

        {

            OSStatus error = AudioServicesCreateSystemSoundID((CFURLRef)[NSURLfileURLWithPath:path], &sound);

            if(error != kAudioServicesNoError)

                sound = 0;

        }

    }

    returnself;

}

- (void)play

{

 AudioServicesPlaySystemSound(sound);

}

@end

1.声音格式是MP3或m4r的需要转成caf格式（可先转成aif , aiff，然后修改后缀）
2.路径在/System/Library/Audio/UISounds 里，需要更改的可以根据以下列表进行替换
3详细列表：
信息 
ReceivedMessage.caf--收到信息，仅在短信界面打开时播放。 
sms-received1.caf-------三全音 
sms-received2.caf-------管钟琴 
sms-received3.caf-------玻璃 
sms-received4.caf-------圆号 
sms-received5.caf-------铃声 
sms-received6.caf-------电子乐 
SentMessage.caf--------发送信息 

邮件 
mail-sent.caf----发送邮件 
new-mail.caf-----收到新邮件 

电话 
dtmf-0.caf----------拨号面板0按键 
dtmf-1.caf----------拨号面板1按键 
dtmf-2.caf----------拨号面板2按键 
dtmf-3.caf----------拨号面板3按键 
dtmf-4.caf----------拨号面板4按键 
dtmf-5.caf----------拨号面板5按键 
dtmf-6.caf----------拨号面板6按键 
dtmf-7.caf----------拨号面板7按键 
dtmf-8.caf----------拨号面板8按键 
dtmf-9.caf----------拨号面板9按键 
dtmf-pound.caf---拨号面板＃按键 
dtmf-star.caf------拨号面板*按键 
Voicemail.caf-----新语音邮件 

输入设备声音提示 
Tock.caf-----------------------点击键盘 
begin_record.caf-----------开始录音 
begin_video_record.caf--开始录像 
photoShutter.caf------------快门声 
end_record.caf--------------结束录音 
end_video_record.caf-----结束录像 

其他 
beep-beep.caf--充电、注销及连接电脑 
lock.caf------------锁定手机 
shake.caf---------“这个还没搞清楚” 
unlock.caf--------滑动解锁 
low_power.caf--低电量提示 

语音控制 
jbl_ambiguous.caf--找到多个匹配 
jbl_begin.caf------等待用户的输入 
jbl_cancel.caf-----取消 
jbl_confirm.caf----执行 
jbl_no_match.caf---没有找到匹配 

日历 
alarm.caf--日历提醒 

iPod Touch 1G 
sq_alarm.caf 
sq_beep-beep.caf 
sq_lock.caf 
sq_tock.caf