I don't know how to do it, or where to put it. The tutorial does not give clues or examples.Didn't test so I might be wrong with this, but most likely this happens when you (re)enable the HourDings and MinuteDings measures. These measures have an OnChangeAction on them, and disabling a measure doesn't preserve its numerical value like it does for strings:
https://docs.rainmeter.net/manual/measures/general-options/#Disabled
Therefore, enabling them after being previously disabled will always lead to an automatic execution of the OnChangeAction (which reacts to the change from the disabled measure value of 0 to the computed measure value on re-enabling).
One possible solution would be to avoid OnChangeAction and maybe disabling / enabling those measures, and use (default, i.e. without IfConditionMode=1) IfConditions to execute the same bangs only when the minute values become 0, 15, 30 or 45, as desired.

I just tried it and it doesn't work. Exactly the same thing happens, once you reactivate it they "sing" the last chimes.
Why is happening this has been told by Yincognito above, however there is a quite simple solution, even if it's not the best approach. Try replacing the LeftMouseUpAction options of the [MtSound1] and [MtSound2] meters by the following ones:Even if this seems to be working, it is definitely not the best approach. So far didn't find a better one, so try this out for first please.Code:
[MtSound1]...LeftMouseUpAction=[!DisableMeasure "HourDings"][!DisableMeasure "MinuteDings"][!ShowMeter "MtSound2"][!HideMeter "MtSound1"][!Redraw]...[MtSound2]...LeftMouseUpAction=[!EnableMeasure "HourDings"][!EnableMeasure "MinuteDings"][!ShowMeter "MtSound1"][!HideMeter "MtSound2"][!Redraw][!Delay "0"][PlayStop]...
Note: the PlayStop bang has no parameters. Accordingly the [PlayStop "#SoundPath#"] bang has two problems: the "#SoundPath#" parameter is not needed (or in fact is ignored by the bang), but even if it would be needed, it is incorrect, because #SoundPath# is the path of a folder, not a path of a .wav file.
There are some additional problems as well, but for first try out this solution and let me know if it fixes the issue. If it does, I come with the additional recommendations as well.

Thank you very much for your help!!!
Statistics: Posted by CarlotaN — Today, 4:10 am