A question about an odd setup

I'm heading off to college in the fall and I'm rooming with one of my friends, and we both share similar tastes in music and will be bringing our computers. We thought up an idea to use headphones on each of our computers when doing things such as browsing the internet and stuff like that.



But we also were toying around with the idea of setting up another set of speakers which we would share to play our music through while we both had our headsets on. So that way we could both listen to the same music without headphones.



I have a old pair of altec lansing speakers model number ACS400 that I love, I found out when examining them that it has 2 audio inputs on it. So I was wondering if I could take a line out from both of our computers and send them to the pair of speakers. So if either one of us wanted to put music on we could do so without messing around with any wires. The only problem is that I'm not sure how we could set this up so we could still use our headphones for other applications than our media players. We both have onboard sound cards and I'm assuming we may have to pick up a pci-sound card however I'm not sure how I would go about the setup. If anyone could help it would be most appreciated!



Thanks,

Brian

A standard audio line-out is green, if I recall correctly one may be for something else. If they are both green then we can look straight away at your problem in depth, if they are different colours, post back what they are and I'll have a looksie.

Yes, we both have green line out ports in addition I also have black, pink, gray, blue, and orange ports

Oops, badly phrased, I meant on the speakers, sorry.

the inputs on my speakers have no colors on them. They're just labeled input 1 and input 2. When plugging my computer input to either of them they both play the same. The only other connections are a Midi cable connecting my right channel to my left channel, and a cable connected to my sub woofer also coming from my right speaker.

I've been researching this, and I am wondering if maybe I can use a virtual soundcard to do my wmp or winamp audio and then let my computer's real soundcard do game noises, system noises and anything else. Or maybe get two real audio cards but then how do I tell the computer how to differenciate between the two of them?