An RPM (from the Red Hat Powertools 7.1 CD) can be found here:
ftp://speakeasy.rpmfind.net/linux/redhat/7.1/en/powertools/i386/RedHat/RPMS//epic-4_2000-6.i386.rpm
The Light script for epic4 can be found here: ftp://light.canuck.gen.nz/pub/Light/. The Light script adds colors and some other nice things to epic4.
For the Debian users:
apt-get install epic4 epic4-script-light