AJ,
I think he wants to make samples from sounds of his yamaha.

Ilknees,
If you want to make samples from sounds of your Yamaha, you can do that with any wave recording software.
You will find ton's of freeware on the net to this.
In case you have a soundblaster there's wave recording software with it and probably already installed.

line-out yamaha -> line-in soundcard..