problem with headset adapter

[Guest ins0mniak82]

i bought an adapter off ebay to connect my regular headphones into my shadow.

i never thought it wouldn't work but when i tested it out, it keeps playing the sound thru the internal speakers. is there anything i can do to stop this or did i just get the wrong adapter??

if i did get the wrong one, i picked one out http://store.wmexperts.com/seidio-mini-usb.../73A75A2812.htm

can someone tell me if they've used this and if its a good buy??

thanks

[Guest ins0mniak82]

does anyone know if this works with the shadow?

http://www.semsons.com/2miusband3st.html

i know paul mentioned he had it but i couldn't find out if he's tried it on the shadow