Think of these pretty portable players as the lovechildren of TiVo, satellite radio and the iPod. They allow you to record your favorite crystal-clear satellite programming TiVo-style and then listen to it later on, wherever you are. Although these wearable units are not themselves satellite receivers-they have to be docked to receive and record content-the XM Samsung neXus and Sirius S50 have two key advantages over their antenna-outfitted relatives: They´re half the size, and you can upload your MP3 and WMA files and mix them into your satellite-radio playlists.

It's a brave new wireless world, yet most portable-audio hounds are still tangled up in headphone cords. Soon, though, you'll have lots of wireless stereo headphones to choose from. The technology isn't brand new, but until recently it was too bulky and expensive to shove into the tiny, splurge-worthy gadgets we love. Expect to see three flavors of wireless earmuffs-Bluetooth, Wi-Fi and magnetic induction [see sidebar below]-rolling out between now and early next year.