How do you unauthorized a computer for itunes?

How do i UN-sync all the songs on my ipod that are from a differant itunes computer, and...?

• use someone elces itunes library... ohkay, this is kinda hard to explain... so let me put it his way, at moms house i have the itunes with alll the original super lame songs that were put on this ipod. and at dads house, i made a rad playlist that i have been using. than with that i plugged in my ipod, and i dont remeber how cause it was a while ago, but i removed all my old songs and i syncd my ipod to the rad playlist i made previously... now at this point, i back at moms house and i want to do the same and FLUSH my ipod completly and start over, but the itunes on this computer has that super lame playlist from when i first had my ipod and it wont let me delete any of the songs from the Compaq_Owner section... and its making me EXTREMELY angry! and i have a whole list of about 30 songs from this one band i spent the last hour downloading on frostwire than put them on my itunes playlist, ... and i try to sync and it doesnt do anything plus, when i plug in my ipod (that has the playlist from dads house) into moms computer, itunes doesnt pop up on its own like its suppost to, i have to bring up the program on my own. 1. i cant delete the compaq stuff, it doesnt give me the option 2. i thought the itunes library that my ipod currently syncd from was suppost to pop up instead of the one from moms house 3. not only that but the ipod wont even sync im so lost can anyone help me?

• Answer:

  1. Try opening the music tab under your Ipods header in Itunes and clicking on the song and hitting delete on your keyboard. Usually this will remove it from your ipod. I 2. No the Itunes library from your dads house can't show up on this computer because the original files are not accessible on this computer. If you're going to sync your ipod it's going to remove any songs from your Ipod that are not in your Itunes library 3. Are you pressing the sync button or just plugging it in? try downloading the latest version of Itunes