You've still got a long way to go. To give you a slight idea:
my entire mp3 collection is now 46gigs. This is 5885 files. 3/4 of those files are dance and thus extended (as in +/- 6min long) versions.
I don't see how I could ever get 60gigs completely full. Of course I could fill it with everything I have on Cd, but that would also mean I would put the songs on it that I don't like and I believe that is not the purpose of this device.