In case you do not know, here is Yamaha news:

OPT editor now available for the most powerful Yamaha home keyboard ever made.

Oct/8/2002

OPT (Open Plug-In Technology) was always intended to support not just our professional synthesisers such as the Motif, and our computer related products like the PLG (MSPS) card series, but indeed to support all Yamaha MIDI compatible products. The scope that OPT gives to anyone developing software as either a host or a client is vast. Whereas stand alone synth editors for example can run alongside your favourite sequencer, (Once you have managed to configure all of the MIDI ports and multiclient links which trust us, can get confusing!!), OPT removes all of this, and allows you to open up the full power of your synthesiser WITHIN your favourite sequencer or music application.

The simple fact is that using OPT makes it as easy to use hardware musical instruments as virtual software ones, from low cost PLG cards right the way up to our flagship products...OPT encompasses all.

Enter Tyros...

Yamaha's TYROS, a breakthrough in sound quality for a digital keyboard features one of the most impressive display systems on a keyboard ever developed. However with many people now creating music on their computer, Yamaha saw the need to integrate the power of Tyros with some of the most popular sequencer and audio products on the market today...

Again OPT (Open Plug-In Technology) came to the rescue...

Using OPT, you are now able to edit sounds, effects and much more on Tyros with the free bundled, fully XP/2000 compatible editor, that not only runs in stand alone mode, but also, via OPT runs seamlessly inside applications like Cakewalk's Sonar 2 (www.cakewalk.com), and Sonic Foundry's Acid 4.0 (www.sonicfoundry.com). Voice patch management, and access to the incredible 8 (yes EIGHT) oscillators per voice, as well as the multitude of effects and filter types make this one of the easiest ways of diving deep into Tyros's huge power without leaving the comfort of your computer screen.

Tyros's built in USB MIDI interface means that connecting it to your PC is a breeze as well, just a simple plug and play connection will have you up and running in seconds.

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New Yorker