external sound card for dj control mp3 le

i have the dj control mp3 le but my laptop wont allow me to use headphones and the speakers.

what usb external sound cards are you using? wat do you suggest?

Any multichannel USB soundcard would work. We obviously recommand the Hercules Muse Pocket:

http://www.hercules.com/uk/Sound-Cards/

Here the configuration guide:

http://ts.hercules.com/faqs/eng/her_eng_00462.pdf