mouse dble clicks  on inputing notes - only on finale, not other progs. - is there some way on the prog to fix this?

Still not sure what your problem is. Could you be more descriptive?

To what MikeR posted, if you use these steps as your guide, it may help us know where the problem is.

https://makemusic.zendesk.com/hc/en-us/community/posts/215729367-General-Discussion-House-Rules 

You may also find it on your own. If that happens, please tell us about it in case others have the same problem.