Let's face it: wireless speakers kind of suck. They're either way expensive, or rely on low-quality Bluetooth technology. It's a combination that leaves many of us forced (gasp!) to cross entire rooms to skip tracks or change playlists - but no longer. ROCKI Free Your Music ($50) is a brilliantly simple device that transforms any speaker in your home into a Wi-Fi-enabled sound system controlled by your smartphone. Just plug it in and download the app to control your sounds from anywhere in the house.