TigerDirect offers the Sony Walkman Bluetooth Adapter
, model no. WLA-NWB1, for $9.96
for shipping. That's the lowest total price we could find by $10. This allows you to stream music from your Walkman Video MP3 player to A2DP Bluetooth-enabled devices. It features up to seven hours of playback time, a 30-foot indoor range, and 20-foot outdoor range.