I do the exact same thing as you, I turn on Speedmine and AutoMine with about a 400 mcMMO level = awesomeness
Can I ask you a question? What version of iridium do you have because the one I have dosnt have sound.
I have 2k mining with fort 3 pick so yeah lol xD and just a quick suggestion, use the resilience client. It's better than full-paid one. @JPCVx switched from iridium to resilience. It has .invsee,.remoteview,anti-afk,fast ladder,bow aimbot, a player map gui, you can even customize the kill aura to target players,mobs, or animals, and it has optifine. Just check it out. In my opinion its the best client out there unless you have a custom made one.