Whoever was the brilliant person who decided to put "Unhide all" right above "Hide" needs to be sacked. I just got done adding a bunch of scenes and I have to go through and hide every. single. one. of. them. I keep accidently hitting "unhide all" which tottaly ruins the time I spent hiding everything, and unhides other sources I already have hidden. Please for the love of all that is true and holly, add a "Hide All" button for the audio mixer. Or at least let me Ctrl + A to select all and press hide. What a simple oversight which can be a simple fix.