intell motherboard, soundmax, windows XP

The problem is, everything works fine according to the computer..but there is headphones in my front jack. That naturally wouldn't be a problem but I don't have a front jack to plug into, and it says that all sound will be muted until its unplugged. I've tried restarting, motherboard drivers, soundcard drivers, messing with the volume, and plugging and unplugging my speakers/headphones. I dont know what kind of problem this is, so I put it here. Any idea what I should do?