Firebox Help!

[A7X21112]

Hello i just bought a Presonus firebox and i love it. But i have 1 question?

I have a pair of logitech z4 speakers going in to my computer and i can only hear from one speaker at a time

When i plug my cord into the Guitar/Mic 1 i get from the right and when i plug into the Guitar/Mic 2 I get form the Left . WTF

Can someone help me i asked a guy at guitar center but said i need to change it from a mono? im new to this so could someone show me or tell me

I can iChat if someone is willing to help that would help a lot

Ps. im using Logic Express and Garageband

Thank you.

 

[kucukbasak]

your speakers should be plugged into the back of the firebox if i'm not mistaken. into the audio out jacks. The ones on the front are your inputs (guitar, mic, etc)