Help! Can't find files

[Turboglo]

So I just bought a used Powermac G5. Want to see how it compares to my older Mini. I have all my files on a Drobo. The new computer finds the Drobo alright, but can't find the iTunes files. I'm hoping this is a simple problem. I've gone into iTunes advanced preferences and chosen the same path that the old computer used. But it's still not showing any files. Please help.

 

[Turboglo]

All is well.