Your speakers are going to have to be powered somehow. This often means they have built-in amps that you'll have to plug in, so instead of speaker wire running to each speaker, you'll have a big power cord running from each speaker to an outlet. If you can get wire going to the speaker, that's probably your best bet unless you have a physical layout where that's a lot harder to do than plugging each speaker into an outlet.
EDIT: and no, I dont' have any