port 1900 and 9335 in use

Hi,

I have nullriver medialink installed on my macbook.

I want to stream music and video to my PS3.

When I try and start Medialink it says ports 1900 and 9335 are in use please quit applications which use these ports.

How do I overcome this?

How do I know which applications are using the ports?

Thank you

lsof -l

pardon is: lsof -i (from Terminal)
but you don't see Listening applications

pardon , too much in hurry; if you want to see also Listening processes run these terminal cmd's.
sudo lsof -i -P |grep LISTEN
sudo lsof -i -P |grep 1900
sudo lsof -i -P |grep 9335

sudo is required to see everything

Did you solve the problem?

Did you solve the problem with medialink and ports 1900 and 9335 being in use? If so, what did you do?
Thanks
David