setcode@debian:~$ sudo apt-get -s install aalib1 vlc libdvdcss2
Reading package lists... Done
Building dependency tree... Done
Note, selecting libaa1 instead of aalib1
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  vlc: Depends: aalib1 (>= 1.2)
       Depends: libdvbpsi2 but it is not installable
       Depends: libflac4 but it is not installable
       Depends: slang1 (> 1.4.4-7.1) but it is not installable
E: Broken packages