The first check to see whether your USB connection between TYROS and PC is oke is to keep MusicFinder Button pressed while switching on your Tyros (2). (if you have a harddisk) Then you must in windows XP explorer see an extra harddisk which is your TYROS harddisk.

How to use your TYROS for sounds?
Yes the TYROS and USB drivers do not support wave or other sounds, but for a long time I connected the Line output of the PC soundcard to the TYROS line input and could so play all sounds (wave, MP3 etc) via the TYROS sound system.

Cheers Jaap