The only reason you should still need access to the old Apple ID is to sync content that was purchased with that ID. Are you getting any error message from iTunes about not much being authorized to sync certain purchases?
If that isn't what's going on, can you provide a bit more info as to why you are unable to sync the Shuffle with iTunes still?
all my music was on that ID and my iPod is also on that ID but I can't log in on that ID so I made a new one but now I just sync it with this ID because I would like to put some new music on it offcourse, but I've tried to log in to the old ID and it said I couldn't, so than I i asked if they could send me an e-mail with my password and stuff and they didnt so now I cant do anything
i'm sorry for my bad english