Itune Sync Wiped Ipod Touch

[fontburn78]

Hi,
I've had a major time of late.
My PC died last month and lost my music folder. Thought no problem it's all on my ipod touch I'll just copy this back to the PC.

Got the PC up and running installed itunes and all working fine. Then looked for some free software to copy music back to PC. First touch and shuffle worked fine. 2nd Ipod touch sync'd without giving my a chance to cancel it. This now has lost all the music off it (strangely not the podcasts)

Is there any way I can get this music back? File recovery software? As it appears to have hidden the music and not deleted them as it displays 4GB used in the software I'm using to move music.

All help greatly received.