I was wondering if its possible to relay my speakers output into my microphone jack using an auxilery cable or by any other method? What I'm trying to do is to stream my computers audio "music for example". And when i'm prompted to select my audio source, with my streaming provider,(if i connect the speaker out jack to the microphone in jack with an aux cable/etc) and then choose microphone, will I capture what I would be hearing from my speakers into my "microphone" selection? Does this make any sense what I'm trying to do and is there any simple way to relay my speakers output back into my computer as an audio device?

Check your sound card settings first. A lot of them have something like "stereo mix" or "what you hear", which will do what you want with less effort.

Thank you for the response, but where would I locate my sound card settings. I operate on windows vista, when I go to manage audio devices, it does not show sound card options, i'm just not sure where to make these adjustments. But what i was asking about running an 1/8th aux cable from speaker out to microphone in and choosing michrophone as my audio option when selecting my audio device. Will this setup do what I was asking, relay my computer audio into my microphone in line. thank you

Will this setup do what I was asking It will, so long as Windows doesn't try to play back what's coming in from the microphone.