HI there if someone could help me out with this that would be great. would like to sync add music to my new iphone 4 from multiple comuters home and work. google not much help. any help would be appreciated. thanks in advance
Hi, it's quite complicated if you want to use iTunes on every computer. Everytime you connect your iPhone to another computer, iTunes will perform it's "Erase and Sync" (delete everything on the iPhone and add the stuff of the new iTunes library - they call it logical connection to one library). If it's ok for you to use another program it will be much easier. You can keep on using iTunes on your home computer. You'll find some so called iTunes alternatives here.
MaryLau is right. It's recommended to use some alternative to iTunes to get the job done on multiple computers without hassle. For further info, you can also read that article.