AMP3 Exclusive Sony Offer from Advanced MP3 Players Buy the Sony X-Series 32GB and get a speaker dock for free! This T3 award winning mp3 player is amazing and you can get this free speaker dock worth £99 when you buy one. The Sony SRSNWGU50 Walkman Speaker Dock is designed for use with virtually all Walkman Video MP3 players that have a WM-PORT. It has a compact speaker system. Enjoy your music through this speaker dock with crisp, clear audio. It also charges your Walkman player! Plus it has a remote control!