OK, taking a deep breath and trying to control temper!
After following the results to the letter in step 1 of the Macintosh manual installation instructions, "Adding the CDP Path", here is my unsuccessful result and the Terminal results that I get when I try testing it ("xxx" is the substitute for my name):
Last login: Sat Mar 1 15:59:38 on ttys000
-bash: PATH: command not found
user-1087qbr:~ xxx$ env
TERM_PROGRAM=Apple_Terminal
SHELL=/bin/bash
TERM=xterm-256color
TMPDIR=/var/folders/7n/gsw9624j2ws8_qxv21hxckbr0000gn/T/
Apple_PubSub_Socket_Render=/tmp/launch-oLjofG/Render
TERM_PROGRAM_VERSION=326
TERM_SESSION_ID=8429EAF1-3408-4D35-8F75-871BCC81CF1D
USER=xxx
SSH_AUTH_SOCK=/tmp/launch-asN8qD/Listeners
__CF_USER_TEXT_ENCODING=0x1F5:0:0
PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
__CHECKFIX1436934=1
PWD=/Users/xxx
LANG=en_US.UTF-8
SHLVL=1
HOME=/Users/xxx
LOGNAME=xxx
VERSIONER_PYTHON_PREFER_32_BIT=yes
_=/usr/bin/env
user-1087qbr:~ xxx$ paplay
-bash: paplay: command not found
user-1087qbr:~ xxx$
As you can see, the test fails. Is this also related to why Sound Loom will not remember my directories, or anything else about my previous sessions?
Again, whatever help administrators or more experienced users/programmers can offer will be most appreciated. If I should contact someone privately for support, then let me know that, as well. Thank you.