Creative Labs Sound Blaster Wireless Audio Transmitter Stream your iTunes music, Windows Media, Internet Radio or any audio from your PC to speakers across the room or around your home no cables Expand your Sound Blaster Wireless Audio System by adding multiple Creative Wireless Receivers or Sound Blaster Wireless speaker Enhance and upmix your compressed iTunes media, MP3s and movies to amazing surround sound using X-Fi technology USB interface gives you maximum compatibility with all desktop or notebook PCs and Macs Supports EAX 4.0 and OpenAL for ultra-realistic gaming surround sound over headphones, plus Creative ALchemy for maximum audio performance