A:
The LinkStick is designed to bring online content (such as Netflix, Blockbuster, YouTube, etc) from the Internet to your television or home theater wirelessly if it is capable of doing so.
As for wireless speakers, the rear speakers for the HT-C550 can be connected to the Wireless Receiver Module (SWA-5000) if you purchase it separately. See pages 20-21 of the owners manual for more information.
Thanks for your interest in Samsung products.
--Mr.Samsung