hello i have for the first time linux installed on my pc and i think its great!!!woohoo no more microsoft trouble!!
here is my question...what can i do with this error??
this is the error i get..
E: Type ‘ftp://ftp5.mplayerhq.hu/mplayer/rele...7try2.tar.bz2’ is not known on line 33 in source list /etc/apt/sources.list
E: cannot read(in)list of source preferences.
go to source pref to correct the problem.
the last part is a translation from dutch to english i hope you understand what it says .thanks
good bye sido

If you click on that link in your post which I'm assuming you have set up as a repository in /etc/apt/sources.list, you will find it is an invalid url, it gives me an error also. Correct that entry in your /etc/apt/sources.list to include the proper url.
Probably this one without the actual .tar.bz2 package:
ftp://ftp5.mplayerhq.hu/MPlayer/releases

By rights, if you are using Ubuntu it should be:
ftp://ftp5.mplayerhq.hu/ubuntu
If you are using Debian amd64, it should be this one:
ftp://ftp5.mplayerhq.hu/debian-amd64
Go to this page and click on your distribution and copy the address in the url field and paste it in place of that bad one in /etc/apt/sources.list.

thanks for yr reactions!i have tried what you said but it seems that i do not have the rights for this file when i want to save it.should i even open it in gedit?how do i give myself the correct rights or how do i log/change into root?and what do jou mean with reinstall?synaptic or ubuntu itself?i am new with all this so sorry if it is somewhat confusing .

Any editing of /etc/apt/sources.list will need to be done as root. You can do this by firing up a terminal session, and su - to root. Then you can use nano, pico, or vi to edit the file to be able to save it.

Because you are using Ubuntu, you can only get root permission with sudo. To edit the file /etc/apt/sources.list with vim, you would issue command:
To learn how to use vim editor, type: vimtutor in a terminal/console and take a quick half hour course. If you want to edit the file with gedit you would issue command:
Any time you need to do something as root/administrator in Ubuntu, you have to put "sudo" at the beginning of your command, then you will be required to enter the administrator password before you gain root privilege.

hello thanks for the help !!!it was very helpfull i have fixed what was wrong .
i like linux

hello since i posted 2 times here i found that the reply's i got were very very usefull.clearly and easy to read thanks!!!!