A 1-2 punch with Sonos — you'll never buy a CD again. With over 5 million songs in its library, Rhapsody effectively gives you virtually all of the world's music available on demand. For an extra $2 per month, you can even download as much music as you want to any MP3 player (notable exceptions: the iPod/iPhone and the Zune) and carry it around. What could be better than music dial tone — wherever you go, your tunes are there. ($12.99 a month)
—Josh Quittner