@peter_strange as you told i made a class which have only one instance in that class's constructor i have initialized my player. But it not working i am having the same problem as before. One thing more can i manage to push the screen manually as if one screen has been pushed i dont want to push the second screen from background process rather i want to push it after the first screen has been closed can i do it??
Player only play a file once and when it ends it is not playing it again. 
player.setLoopCount(-1);
Here is the code for the Singleton and in this case
public class SingleTonPlayer {
private static SingleTonPlayer _instance ;
private static final long GUID = 0x49c25abe58d904d9L;
private Player player;
SingleTonPlayer (String musicToPlay) {
try{
FileConnection fileConnection = (FileConnection) Connector.open(musicToPlay);
InputStream inputStream = fileConnection.openInputStream();
player = Manager.createPlayer(inputStream, "audio/m4a");
player.realize();
player.prefetch();
player.setLoopCount(-1);
player.start();
if(fileConnection != null) {
fileConnection.close();
}if(inputStream != null) {
inputStream.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MediaException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static SingleTonPlayer getInstance (String getMusicFile) {
if (_instance == null) {
_instance = (SingleTonPlayer) RuntimeStore.getRuntimeStore().get(GUID);
} if (_instance == null) {
SingleTonPlayer singleTonPlayer = new SingleTonPlayer(getMusicFile);
RuntimeStore.getRuntimeStore().put(GUID , singleTonPlayer);
_instance = singleTonPlayer;
}
return _instance;
}
public void stopMusic() {
try {
player.stop();
// player.close();
} catch (MediaException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
hey as your suggestion was based upon the constructor because i was previously intializing the player in the constructor of the SingleTonPlayer class. Now i have changed that as you suggested i made a playMusic(String getFile) which is used to play the music file.
as i reviewed the code i have seeing only one change that you are not using this line (_instance = (SingleTonPlayer) RuntimeStore.getRuntimeStore().get(GUID)
of code is this line causing any problem ??? And i was playing the file in the condition where _instance!= null; now removing it from my original code and running it to see what happens.
_instance = (SingleTonPlayer) RuntimeStore.getRuntimeStore().get(GUID);
Because in your code you didnt use the above line. Should i avoid this line in my code. And thanks For suggesting to change the audio bytes into a byte buffer.
i made the changes like this .....
public static SingleTonPlayer getInstance (String getMusicFile) {
if(_instance != null) {
_instance.stopMusic();
//_instance.playMusic(getMusicFile);
_instance = null;
}
//_instance = (SingleTonPlayer) RuntimeStore.getRuntimeStore().get(GUID);
SingleTonPlayer singleTonPlayer = new SingleTonPlayer();
RuntimeStore.getRuntimeStore().put(GUID , singleTonPlayer);
singleTonPlayer.playMusic(getMusicFile);
_instance = singleTonPlayer;
return _instance;
}
same problem i am getting.
Hi @peter_strange i have made changes as you told and i am now only closing the file connection only.
public static SingleTonPlayer getInstance (String getMusicFile) {
if(_instance != null) {
_instance.stopMusic();
_instance = null;
}
SingleTonPlayer singleTonPlayer = new SingleTonPlayer();
RuntimeStore.getRuntimeStore().put(GUID , singleTonPlayer);
_instance = singleTonPlayer;
return _instance;
}
Now my playMusic(String musictoPlay) methos is looking like this is this what you were telling me to do if there is some flaw please tell me how to fix that . Many a thanks to you 
public void playMusic (String musicToPlay) {
try {
FileConnection fileConnection = (FileConnection) Connector.open(musicToPlay);
InputStream inputStream = fileConnection.openInputStream();
byte [] audioData = IOUtilities.streamToBytes(inputStream);
ByteArrayInputStream bais = new ByteArrayInputStream(audioData);
player = Manager.createPlayer(bais, "audio/m4a");
player.realize();
player.prefetch();
player.setLoopCount(-1);
player.start();
if(fileConnection != null) {
fileConnection.close();
}/*if(inputStream != null) {
inputStream.close(); // HERE NOT CLOSING InputStream SHUD I CLOSE IT ??
}*/
} catch (IOException e) {
// TODO Auto-generated catch block
System.out.println("Getting exception from "+e.getMessage());
e.printStackTrace();
} catch (MediaException e) {
// TODO Auto-generated catch block
System.out.println("Getting exception from Media exception "+e.getMessage());
e.printStackTrace();
}
}
and its working now i think i might accept it as solved but if i will get any problem. I will reopen it. Thanks @peter_starnge you were really helped me a lot. Many a thanks to you sir and kudos to you . :-)
