That one is quite self-explanatory - it seems like you don't have (under Maemo) directory /.debian. Create it.

*If* it still doesn't work after that (and error about /.debian/var/run/pulse not existing still shows up), check, if you have /var/run/pule in the package you've downloaded. If not, there is something wrong with it.

Frankly, I have no clue what this debian-5-chroot-rootfs.tar.bz2 thing is - for sure, ti wasn't created by me. I don't know if you, accidentally, haven't decided to try some qole's unfinished WIP chroot content, not meant for end-users.

You should rather try one of provided images (*.ext3 or *.ext2 files), mount it, and extract it content to your partition.

/Estel