iPod uploading help!? please?

i just bought 3 new zap em dead bartholomeew songs for my 3rd generation ipod nano
using my account
the account registered with my computer, and the one i havebought 200 songs with

yet it is telling me i have too many ipod accounts for my ipod!!

i have songs from my
sister
brother
other brother
and me

thats only 4 accounts, so why is it telling me i already have five
and even so it shouldnt matter cause its not a new acct.

i have tried making a cd with the songs and uploading the cd, but i failed

what do i do!?!?!?!?!!?!?

help