If so, why not post in that thread? Even if it is two months old it will pop to the top of the first page again, and we can see the details of your problem, what you have tried, what jacks you have to choose from, what sound card, etc, etc, etc,
Do you have the correct jack?? Many are "open circuit" type which cause the circuit to the speakers to be cut off. With the incorrect jack [plug?] that won't work.
i have plugged my headphones in the right sockts, but sound comes from my speakers and not my phones. when i go to the audio icon in my control panel and click on advanced and select headphones it will not give me apply as an option! the apply button is there but will not allow me to click on it.