i can't download music from any of the downloading soft ware Eg bearshare or limewire, why is this?

Answer 1

Because it's illegal.

Answer 2

Do you have an active (personal firewall) other than the one Windows provides. These often restrict access to P2P file networks.

The same can be said about anti-viruses.

I suggest you disable any active firewall and alter the Windows filewall to allow you to access the P2P netwrok.

I hope these helps
More Information about how tro disable your own personal firewall can be found at http://www.google.com