Finally completely wireless
For instance, the ZEN X-Fi finally deals with the synchronization cable. After all, why use a cable in the Bluetooth- and WiFi decade. The ZEN X-Fi is WiFi enabled. Useful for synchronization, but moreover for wireless streaming audio. You can connect your X-Fi to any (free) wireless hotspot and stream the audio files directly from you PC at home.

Have a chat with your X-Fi
Are you looking for something more interactive? The ZEN X-Fi supports MSN and Yahoo Messenger. In other words, you can chat online by using the 11 keys on the ZEN X-Fi, similar to writing an SMS. Microphone, Speaker and FM-tuner are built-in. An SD-card will solve any memory problem. Price and release date are unknown.