Who is your ISP? Have you tried downloading outside of your ISP's peak hours, to see whether your download speed increases then?
Do you see the firewall icon (brick wall in front of the blue globe)?
If you see the firewall icon, what's the brand & model of your modem/router?
What software firewalls do you have installed?

You probably need codecs for your player, if you're getting audio but no picture.

Have a look through the thread below, there are links to codec packs. The XP & K-Lite packs are popular.
http://www.gnutellaforums.com/tips-t...p3-fixers.html

Or you could try VLC player...it's free & has codecs installed to play most file types. It's a good player. That thread has a link for downloading VLC if you want to