I want to play an audio file based on the click of a button. I have defined the `onClickListener()` method and the layout file. When I add the wav files to the `res/` directory, I get the following build error:

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> invalid resource directory name temp.wav /hello/res line 1 Android AAPT Problem
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My question is as follows:  

1. What directory do I need to store audio files in? Currently they are in the res/ folder.  

2. Also, `mp.setDataSource("/res/temp.wav")` the correct way to invoke the media player?