It's not the firewall,i turned it off completely and it doesnt work either.
I installed MC18 on my dad's laptop,typed in the access key and it worked first time.
When i'm testing my connection (clicking the access key) it says the following:
The library server is not reachable from the internet,but you can still use it within your local network.
To use this server from other computers on your local network,select it in the tree (playig now ,-> playing from) and click load library
To make this server accessible from the internet,you'll probably need to configure your router's port forwarding to allow incoming access on port 52199
So i did that port forwarding thing on my US Robotics router but it stays the same.
Any more things i could try,try it in safe mode or something.
JRemote is the reason why i bought an iPad to control my music library.
I dont want to do a fresh re-install off windows just so that it 'could' work