Where did you download the other packages from? You can get what you're looking for from CVS... see https://openacs.org/4/checkout. If you have CVS installed do something like:
cvs -z3 -d :pserver:anonymous@openacs.org:/cvsroot co -r openacs-5-1-compat acs-mail-lite
acs-content is an obsolete package. What needs it?
