Quote: Originally Posted by
batman3n1 
I have a dell inspiron 9300 P4/not core duo or higher. recently installed vista ultimate. audio is built in/simtel (older) when i'm playing sound, and plug in a set of headphones, the internal speakers turn off but I cannot hear anything thru the headphones.
Hi batman3n1
Go to Sounds in control panel and look threw the options and properties. You might have the option to use jacks as separate inputs.