UPS delivered my free Belkin USB 10/100 Ethernet Adapter from Yamaha yesterday.
It came with a cover letter from Mark Anderson, Marketing Manager at Yamaha for portable keyboards.

This nifty device allows you to connect your Tyros 2 directly to the Internet via a Router and a Cable/DSL modem. It can also be used to connect any PC or Laptop with a USB port to a 10/100Base-T Network.

Buy.com sells the identical Belkin Adapter (Part Number: F5D5050) for $26.99
http://tinyurl.com/eyojy

Thanks to Yamaha for the Free Gift!

I wish there was a way to download content from the IDC site to your home computer rather than the Tyros 2.