*1. does anybody know how i can get all my music from my ipod and put them into my itunes*
If you have any iTunes Music Store purchases the transfer of purchased content from the iPod to authorised computers was introduced with iTunes 7. You'll find details in this article:
Copying iTunes Store purchases from your iPod to a computer
The transfer of content from other sources such as songs imported from CD is designed by default to be one way from iTunes to iPod. However there are a number of third party utilities that you can use to retrieve music files and playlists from your iPod. I use Senuti but have a look at the web pages and documentation for the others too, you'll find that they have varying degrees of functionality and some will transfer movies, videos, photos and games as well. This is just a small selection of what's available, you can read reviews of some of them here:
Wired News - Rescue Your Stranded Tunes
Senuti Mac Only
PodView Mac Only
PodWorks Mac Only
iPodDisk PPC Mac Only (experimental version available for Intel Macs)
iRepo Mac & Windows
iPodRip Mac & Windows
YamiPod Mac & Windows
Music Rescue Mac & Windows
iPodCopy Mac & Windows
There's also a manual method of copying songs from your iPod to a Mac or PC. The procedure is a bit involved and won't recover playlists but if you're interested it's available at this link:
Two-way Street: Moving Music Off the iPod
*2. how can i change my ipod to mac format, it is currently in windows*
Once you have everything on the iPod safely transferred to the Mac restore your iPod. Restoring will erase and reformat the iPod's hard drive, reload the software with the Mac version and put it back to default settings. Once the restore is complete follow the on screen instructions and it should connect to iTunes and give you a prompt to automatically update your library onto the fresh installation. If you want to update manually or using selected playlists choose no and it will default to manual mode and you can choose whatever setting you like:
Restoring iPod to factory settings with iTunes 7
