How to connect 321 bose speakers?

How would i connect my tv to my bose companion 3 speakers whilst there already installed on my pc?

• 1) I have bose companion 3 speakers installed on my computer, but want to connect my nearby tv to them also, but so the speakers can play from both my computer and tv. Is there an easy way to do this? The tv is a 32 inch samsung hd flat screen if that helps. 2) Also is there a way i could add an extra subwoofer to the bose speakers? There is a headphone jack on the volume control of the speakers if that helps.

• Answer:

  You should have more than one input on your sound card, simply run a jack / red&white audio lead, from the back of your TV, into the input on your sound card, and configure it from your control panel. If you have more than one output on your sound card, run a mono lead out directly into the Sub, and as most Subs have built in Amp, you can control the Bass level directly from the Sub.