Second, email the seller one last time and tell him you will contact all his current bidders about his fraud if he does not respond your email in 24 hours.
Third, start email all the bidders that are currently bidding at the seller site ( CC a copy to the seller that you are mean business )
Also report to Paypal about the seller if you've paid your item by Paypal.
I did all the above when my seller didn't send me my item last time, some of his bidders canceled the bid after they 've received my email.If he does not send you the item then destroy his sellings ( save other buyers too ) But to be sure,you should wait for a couple of days before you decide to do so,you don't want to hurt an innocent man just because the seller was late in shipping your item.