This bug is still there
No, the bug you originally reported is not still there.
and the more users we have, the more support tickets we get about it. People can't [re]start their server and/or AutoDJ software.
You seem to be referring to a completely different issue now. Originally you said streams were not stopped when they were terminated. Now you seem to say they aren't stopped when users restart their server or autoDJ. If that's the case, please open a ticket with the helpdesk, as that's an unrelated problem.
2014-08-20 - Won't fix; Can't implement without root privsis not acceptable. Why not create a daemon which runs with root rights and does the job?
1) Because that would be a bandaid fix -- we're not going to implement an entire new application just to clean up the side effects of a problem rather than fixing the root problem;
2) Because thousands of other clients are not encountering this issue, leading me to beleive it's something specific to your servers or your usage scenarios;
3) Because root privileges are not needed to kill processes that were launched by Centova Cast, which is what you're talking about now.
Please open a support ticket to have someone look at your server the next time this happens. We can't assist without seeing what's going on.