PLEASE HELP! -music through headphones and speakers?

Hi, i have mixvibes Cross le.
I cant seem to listen to the music through my laptops speakers and then cue and hear music in my headphones at the same time. I am a newbie so please bear with me.
I have the headphones plugged into this soundcard
http://www.amazon.co.uk/Dynamode-Channe ... 440&sr=8-1
Does anyone know how to do this?
Thank you
I cant seem to listen to the music through my laptops speakers and then cue and hear music in my headphones at the same time. I am a newbie so please bear with me.
I have the headphones plugged into this soundcard
http://www.amazon.co.uk/Dynamode-Channe ... 440&sr=8-1
Does anyone know how to do this?
Thank you
