I had the original problem too.
I solved the issue by going to C:\Program Files(x86)\Cyberlink\WaveEditor\Language\Enu\WaveEditor, but instead of a .chm file, I saw WaveEditor.exe file.
I highlighted the WaveEditor.exe file, rt. click, and selected Pin it to the taskbar... works for me! Thanks for the tip.
The F1 hint does not appear to work for me.