G'Day Rainer,
It appears that there is no issue with any software versions here. The shared directory that your URL points to still exists, but is no longer available to anyone without appropriate credentials
The link you gave actually looks like someone's home router that has been exposed to the internet. It is an ASUS WL-700gE that runs a webserver in an onboard DMZ. This is supposed to allow sharing with your friends over the internet and also to do unattended downloads and the like. I think that is a pretty dumb idea because it is very easy for a novice user to expose large parts of their home network to the internet.
The music folders that might have once been shared are no longer available, as the owner has disallowed the guest user account to access these shares. (Probably because his bandwidth was being leached by the whole world going through his personal paid iTunes library). The owner was, at least, smart enough to change the default admin password. So... unless you know the owner and can get a logon to the router, it looks like you will have to buy your music, rather than (illegally??) using others
Regards
Sutty