How to download songs on to your Ipod that you have bought from itunes store on your computer.?

I bought 2 albums off the Itunes store on my computer, and i would like to put them on my ipod, with out syncing it to my computer. I haven't got the cord to hook it up right now. Any help would be appreciated.|||If u have wifi then go to the iTunes store and purchase them from ur iPod. It will say something like, "you have already purchased this item, would unlike to purchase It again for free?" and then it will download on ur iPod for free