I kind of smashed the remote belonging to my z-5300e's and was wondering if anyone here knew where to get one. Without it my speakers wont work, but they are in perfect conditio. What do i do?

Look on eBay for a set with have damaged or not working speakers.

May seem obvious but have you sent Logitech an e-mail?

Could either be honest and see if they'll sell you a new remote or say it was faulty (their policy is to send a new product without asking for a return, at least with wheels)