zip once again not present:
$ unrar -x Finance\ Capital\ 0.4.2.rar
unrar 0.0.1 Copyright (C) 2004 Ben Asselstine, Jeroen Dekkers
Extracting from /home/zqui/downloads/Finance Capital 0.4.2.rar
unknown archive type, only plain RAR 2.0 supported(normal and solid archives), SFX and Volumes are NOT supported!
strong suggestion to use .zip, the worldwide crossplatform standard.