Just a Note: To avoid problems with Rocketlauncher + BigBox I did this and works fine:
Update RL to the last version.
In RocketlauncherUI create a new Front end in RLUI settings:
Name Launchbox, path Your bigbox.exe path (no launchbox.exe just in case), Plugins Launchbox
In RocketlauncherUI, Main Settings:
Set Hidefrontend an SUspend frontend options to True.
Restorefront end False.
In Launchbox, all your emulator CMD lines for RL have to look like this:
-f "..\..\LaunchBox\BigBox.exe" -p "LaunchBox" -s "American Laser Games" -r
Rocektlauncher takes a long time to load (compared when using with Hyperspin) because of the many checks needed to find all LB media.
During this time BigBox will operate normally (until the RL fade screen appears) because I suppose BigBox expects that the launched application take the focus and return it to Bigbox just once tha game/app as been closed. RL don't do this right away... hope there is some mode to make BIgBox "Know" when Rocketlauncher is running and act acordingly.