There's a possibility that the impedances won't match. In other words, your computer jacks only show one for headphones, and one for microphone. Headphones are typically a different impedance than speakers. Also, are those speakers powered, or are they meant for a system that has an amplifier that drives them. Computer speakers have their own power source, that you plug in, as the power requirements to drive them is not met by the internal power of the computer. The only thing the computer contributes is the modulation (electrical impulses which carry information in music, or words, "modulating" the waveform), at a very low voltage/current. So, firstly, I don't think it's as easy as just "connecting" the wires to the computer, through an adapter. You have to know what the impedance of the speakers are, and whether or not they are powered. Headphone impedances are typically in the range of 32 ohms. A typical speaker setup can be 4-18 ohms. This would allow for an overcurrent situation, not conducive to the health of your sound card. Here's more: Read this discussion to get some more clarity: http://www.tomshardware.com/forum/39939-6-connecting-speakers-directly-computer and this: http://answers.google.com/answers/threadview/id/212881.html Read enough to find out about powered vs. unpowered, etc. Read also: http://en.wikipedia.org/wiki/Computer_speaker
A wise man once said "let the boy play" ...... no actually that was never said by anyone and if it was it was never recorded but I had 6 speakers running off a multitracker which was hooked up to my computer once. I also had a stereo, microphone, tv and telephone running through my multitracker. The wiring was very unprofessional but it all worked and sounded magnificent. One only learns by doing. Just make you don't blow anything up
The problem here is that some people can't afford to learn by doing, when there is information that helps one to learn without ruining the sound card and having to buy a new one. If someone is so poor that they can't afford to go out and buy a set of computer speakers, I doubt whether they want to ruin a good sound card as well.
On the speakers it says "impendence: 6 ohm" Im pretty sure these speakers need a power source that isnt the computer. They were orinonally from my stereo. I know I cant just plug them into adapters, there needs to be some sort of intermediate device between the computer headphone jack and the speakers. What kind of device would I need??? sorry if these are noob questions.