I have been using limewire pro for a while now and I was having this problem every now and then but lately it is becomming more frequent.
When I am trying to down****d a movie I am getting a message that says this "content is blocked this mediafile can only be used with..." and then it lists another media player like dom player.

1. OS version? Windows Vista and yes administrator.
2. What firewalls you have? I use windows and avg
3. How much ram? not sure
4. Hard Disk space available? 70gb
5. Connection type? wireless broadband
6. Modem & router brand name & model numbers? Linxus
7. Where are you trying to connect from? House
8. What version of LimeWire (LW) & Java do you have? lwpro 4.16.7 and java 1.6.0-oem
9. Who is your ISP (Internet Service Provider)? McPherson Media
10. Do this simple test for us. Using your browser go here: http://www3.limewire.com:6346/ The page should say 'Your test worked!'. What happens when you go there? It says your test worked
11. Are you sharing the connection with other computers or p2p sharing programs? No
12. Is this a your 1st try at LW or is this a new problem with an experienced user. Worsening problem with ok user.
13. Do you see a brick wall in front of the blue world icon at the bottom of LW's interface? click here to see Sample image yes.
14. For those using a modem/router, how is your modem/router set up...are you port forwarding or is UPnP enabled? Not sure sorry.
15. What security programs are you using (antivirus etc)? Some people might not be aware that their security suite includes a firewall avg
16. What country are you living in? Oz

I am using vlc and windows media player.

I hope this helps let me know if anything else needed.

Lisa.