Hooking up astro's to the computer is super easy if you have the 2013 mix amp. All you need to do is plug a jack from the livestream port into your computers mic socket. Then, in the mp3 port, plug a jack into that and connect it to your PC's headphone port.

You will need to buy a mic though, otherwise if you use the astro mic to talk, your team/friends will hear themselves and your game. You can buy decent mics for under £20.

Below, I will link one which I use to use and can guarantee amazing quality:

UK (Amazon): http://www.amazon.co.uk/Microsoft-LifeChat-LX-3000-Standard-Packaging/dp/B000JSDOMO/ref=sr_1_1?ie=UTF8&qid=1413747613&sr=8-1&keywords=microsoft+microphone

US (Amazon): http://www.amazon.com/Microsoft-LifeChat-LX-3000-Headset-JUG-00013/dp/B00906E03I/ref=sr_1_1?ie=UTF8&qid=1413747693&sr=8-1&keywords=microsoft+microphone

UK (ebay): http://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313&_nkw=Microsoft+LifeChat+LX-3000+Headset&_sacat=0

US (ebay): http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR2.TRC1.A0.H0.XMicrosoft+LifeChat+LX-3000+Headset&_nkw=Microsoft+LifeChat+LX-3000+Headset&_sacat=0

I thought I would be a nice guy and give you both ebay and Amazon choices, as well as giving you the correct website (.co.uk or .com) to buy from :)

Hope this helped :)