mp3 iphone

1)

    MPMusicPlayerController *myPlayer =

    [MPMusicPlayerControllerapplicationMusicPlayer]; 

    [myPlayer setQueueWithQuery: [MPMediaQuerysongsQuery]];

    [myPlayer play];

    

///

2)

    MPMediaQuery *query = [MPMediaQuerysongsQuery];

    NSArray *collection = [query items];

    MPMediaItem *item = [collection objectAtIndex:0];

    NSLog(@"%@",[itemvalueForProperty:MPMediaItemPropertyTitle]);

3)

   录音相关

   http://blog.youkuaiyun.com/logcabin/article/details/7726636

  

   2个文件合成：http://blog.youkuaiyun.com/logcabin/article/details/7861195

   http://stackoverflow.com/questions/11632575/audio-mixing-on-iphone-need-advice

4) 

通过iphone听筒播放声音的代码

http://www.mr3g.net/?p=256