主要是Uri的获取！！！

Uri leave = null;
        Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), leave.parse("android.resource://" + getPackageName() + "/" +R.raw.audio)); 
        r.play();

下面程式是在引發Notification功能時，播放指定的聲音

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Url alert;
NotificationManager manger = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification();
notification.sound=alert.parse("android.resource://" + getPackageName() + "/" +R.raw.beepd);
manger.notify(1, notification);


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不管什麼資源，透過此方式就可以將raw指定給android內建的一些函數， 例如：

MediaPlayer,Notification,VideoView,ImageView，但是檔案格式要符合Android的支援格式。

另個例子：

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Url alert;

VideoView vv;

vv.setVideoURI=alert.parse("android.resource://" + getPackageName() + "/" +R.raw.myVideo);

:

:

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Android reference:

http://developer.android.com/guide/topics/ui/notifiers/notifications.html