Play at speed still doesn’t work by keyboard.
It assign the key combination, but no response.
Will be fixed this bug?
By the way! Audacity : win-r1d137db-2.1.2-alpha-23-dec-15
Works fine for me on Windows 10, setting F9 as the key.
There should be no reason for it to be different on other Windows versions.
If you still think it does not work, please give exact steps to reproduce the problem including the key you assign. Are you using a non-English keyboard?
Gale
In Windows 7 doesn’t work. 
give exact steps to reproduce the problem
We can’t fix something that’s not broken. You should tell us exactly what you were doing when it failed.
Koz