5. Ran "netstat -p tcp -a -n" and noticed that the process inetd was listening on port 8002, not streamproxy
That should have told you that something else went wrong before.
inetd isn't supposed to listen on port 8002 on OpenPLi, because the streamproxy is started as a stand-alone daemon.
I wonder how you managed to get it borked like that in the first place, because streamproxy has all the original transcoding proxies in its conflicts list and will remove them.
The following steps just describe how to bork it even more, because now you got two incompatible transcoders installed at the same time.
To put it into some picture:
You drove your car against a wall and now you can hear the metal scratch on the road while driving ... but instead of repairing the damage, you mount larger wheels, hoping the bent metal doesn't get ground contact anymore.
That works so far, but now you can smell the rubber of the tires, because the larger wheels don't fit inside the wheelcase anymore ...
BTW: Removing the line for port 8002 from /etc/inetd.conf and re-configuring erik slagter's streamproxy to use port 8002 again might lower the pain ...
But there can't be any simple advice for reverting your system to a truely clean state, because it must have been brought into its current state using brute force and we do not know what kind of force.
For proper repair, we would need to know
how you managed to break it in the first place and only you can know that.
It is
impossible to still have an inetd.conf listener on port 8002 if your transcoding was installed/upgraded the normal way.