File list (Check if you may need any files):
PlayActivity\a.xml
............\Test\.classpath
............\....\.project
............\....\AndroidManifest.xml
............\....\bin\classes.dex
............\....\...\.om\linyu\Music.class
............\....\...\...\.....\MusicButton.class
............\....\...\...\.....\MusicHandler.class
............\....\...\...\.....\PlayActivity.class
............\....\...\...\.....\R$attr.class
............\....\...\...\.....\R$drawable.class
............\....\...\...\.....\R$id.class
............\....\...\...\.....\R$layout.class
............\....\...\...\.....\R$string.class
............\....\...\...\.....\R.class
............\....\...\...\.....\Test.class
............\....\...\resources.ap_
............\....\...\Test.apk
............\....\default.properties
............\....\gen\com\linyu\R.java
............\....\res\drawable\abc.jpg
............\....\...\........\icon.png
............\....\...\layout\main.xml
............\....\...\......\play.xml
............\....\...\values\strings.xml
............\....\src\com\linyu\Music.java
............\....\...\...\.....\MusicButton.java
............\....\...\...\.....\MusicHandler.java
............\....\...\...\.....\PlayActivity.java
............\....\...\...\.....\Test.java
............\....\bin\com\linyu
............\....\gen\com\linyu
............\....\src\com\linyu
............\....\bin\com
............\....\gen\com
............\....\res\drawable
............\....\...\layout
............\....\...\values
............\....\src\com
............\....\assets
............\....\bin
............\....\gen
............\....\res
............\....\src
............\Test
PlayActivity