Ipod to Ipod transfer..PLEASE HELP

I would love to know how to transfer music from IPOD to IPOD via a computer. I know that there is a way to do it with connecting ipods directly together, but the transfer is in real time (not real fast). There has got to be a way without first transfering music onto a HD and then transfering onto another ipod.

PLEASE HELP ME!!

If your on Mac you can use xPod, Senuti, El iPodo, Get IPOD MP3, iLink iPod, iPod Access, iPod Browse, iPod Decloak, iPod Freedom, iPod MP3 Enabler, iPod Music Liberator, iPod tracks -> Desktop, iPod Viewer X, iPod -> Folder, iPod-Dripper, iPod2Mac, iPodDownload, iPodRip, iPodToggler, iPodTraps, kPod, MusicExporter, Ollie's iPod Extractor, Open Pod, Pod 2 Pod, Pod Manager, Podestal for OS X, PodLock, PodMaster, PodSalvage, TuneTech for iPod, xPort, and YamiPod. Thats all I can think of for now. I prefer Senuti myself.

you rock Kanzen. thanks so much.

Got any for pc? And what about an avi converter?