Rajeabc
Small Question
What is your data source? (Which is your data provider for intraday data?)
As I noted that some where you said that you are not getting the audio alert in few stock, you will get Alert only when you click on that particular stock chart . I think you should check that when you open multiple stock in multi chart all stock are updated simultaneously or not, Or data will get updated when you click on that stock chart. Now if your answer is that when you click on chart, that time only a data get updated that means there is issue with your data provider.
I think you are using Market Data Provider (MDP) for your data Source?
If yes speak with agent change your plan.
HULK