When i try to put new my music it deletes the ones that were already on

Question

when i try to put new my music it deletes the ones that were already on my ipod. How do i stop this?
dell dimension 3000   Windows XP  

Answer 1

You can delete songs from your iTunes/computer hard drive after transferring them to the iPod, and for this you need to set your iPod to manage the songs manually.
However, this is an extremely risky option because when (and not if) there comes a time to restore your iPod, which is a very common fix for iPod problems, then all the music would be erased. If you no longer have the music in iTunes (or any other back up), then all that music would be lost.
What if the iPod were lost/stolen/needed repair? Again, the music would lost. I strongly recommend a back up, and if computer hard drive space is in short supply, you should seriously consider an external hard drive. They are not expensive, and the cost is well worth it when compared to the loss of all your precious music.
At the very least back up your music to either cd or dvd before deleting it, particularly any purchased music/videos, as this would have to be bought again if it were lost. See this.
Backing up your media in iTunes.
Please excuse the sermon, but we see far too many people lose their music because of no back up.