1. If you want to just sync you Myspace, Twitter and Facebook band page you can do this very easily. Simply setup your Facebook Page to update your Twitter and do all of your initial post from FB. Once you have this going, go to Myspace’s super easy Twitter sync page and have Myspace get updated every time you tweet!
2, If you want to get your Tumblr into this equation it is easy, Just click services and you can get it so that your Facebook and Twitter are updated from your Tumblr.