Songs deleted off of mp3 player

Question

I recently deleted all of the songs off of my delstar mp3 player. I cannot put any songs back on there because there is an error message that says " It is not possible to change sync settings at this time. Try again later." This message is on all the computers I have tried to sync songs from. How can this be resolved? I also called delstar at their hq in Florida, and nobody answered. What's up with that?