I have Program Events in the Sound control panel (mmsys.cpl) for TortoiseSVN, which is no longer installed on my computer.
How can I remove them?
I have tried reinstalling and unintallting the program, but that didn't help.
Personally, I would start by deleting all registry keys containing the string "TortoiseSVN".
If you just want to remove the offending key, "EventLabels" looks promising: