i am trying to purchase a newer version onto my ipod but it says i need to purchase the songs and tv shows into my library but i cant figure out how.

Here are some tips:

If all your songs were purchased from iTunes store, use "Transfer Purchases" option to transfer. See http://support.apple.com/kb/HT1329

If some of your songs were from other sources, you will need to utilize some iPod transfer program to help you, like this handy one called Tansee iPod Transfer
http://www.gutensoft.com/Utilities/Tansee-iPod-Transfer.htm
Many of my friends are using it for its easy and safe transfer.

With just a few simple clicks, it will help you transfer all songs/videos from iPod to your selected folder on your computer, and then you can also easily add those files back to iTunes.
More importantly, this won't overwrite any original files on your iPod. And all song names are preserved.

Here is the step-by-step guide on the whole process:
http://gutensoft.com/Guide/How-to-transfer-songs-and-videos-from-ipod-to-computer.htm

Best luck!
You can also search more other ways at http://ask.com

Plug in iPod to computer, then go to iTunes menu "File-> Transfer purchases", It will copy your bought songs from iPod to computer.
Or You may refer to this step by step guide, it's regarding how to copy all songs and videos from iPod back to computer and iTunes. My friends sent it to me, it's safe and works pretty well for my iPod.
http://www.ipod-transfer-copy.com/how-to-transfer-music-from-ipod-to-computer-itunes.html
Glad to help you. Contact me if you need further help.

You can try an iPod to iTunes Copier to copy all your iPod files to your iTunes.

I purchase it here:

http://www.dvdtoipadtransfer.com/ipod-transfer.html

It can help you copy iPod music,video,photo,tv shows,podcast to your iTunes on your computer.

Just real purchase it to try. It is safe and quite easy to use.

You can use an ipod to computer transfer program to help.I personally use Cucusoft iPhone/iTouch/iPod to Computer Transfer.It helps me to transfer my songs/videos/photos/playlists etc from ipod to my computer iTunes directly and safely.It works well for me,you can give it a try.
real purchase it at: http://www.dvd-video-soft.com/ipodconverter/ipod-itouch-iphone-transfer.html

It even has step-by-step guide on the whole process.
Hope it helps.
You can keep asking on http://answers.yahoo.com or use http://www.ask.com to search more

Full guide: Transfer songs, videos, photos and playlists from iPod to Computer or iTunes

http://www.transfer-iphone.com/transfer-songs-videos-photos-playlists-from-ipod-to-computer-itunes.html


GOOD LUCK!

You can try 4Easysoft iPod Mate to carry out this problem. And you will find more information here:
http://www.4easysoft.com/ipod-mate.html
http://www.4easysoft.com/purchase/ipod-mate.exe

Here's the Apple instructions - http://support.apple.com/kb/HT1848