nope:
$ sudo gainroot
# tar -xf /media/mmc1/My\ downloads/freeciv.tar.bz2
tar: invalid tar magic

the same result if for all the other files.

as user, it's not better:
$ tar -xf /media/mmc1/My\ downloads/freeciv.tar.bz2
tar: invalid tar magic


even better:
tar -xvjf /media/mmc1/My\ downloads/freeciv.tar.bz2
tar: invalid option -- j

I always thought that the -j means a bzip2 archive!!!

help please!