JoeViking245

Edit:
This is now a builtin LaunchBox feature as of release 10.7-beta-1.
 
Resets a games Play Count to 0 (zero).
Place the "ResetPlayCount.dll" file into your     ..\LaunchBox\Plugins\     folder.
*edit* Right click ResetPlayCount.dll, select Properties and click "Unblock".  
Start LaunchBox.
Select just one, multiple or all (Ctrl+A) games.  Right-click and then click on "Reset Play Count" located at (or near) the bottom of the popup menu.
There is no "Please Confirm" nor "Play Counts have been reset to 0 (zero)" message boxes.  It just does it as soon as you click it. (V1.0)
*edit* Version 1.1 adds a confirmation message box.
ResetPlayCount.dll - 6KB

Bulk Custom Command-Line Editor
Use this to set (or clear) the Custom Command-Line Parameter for the selected games.
The would be the same as selecting a game, click Edit, go to the Emulation tab and check "Use Custom Command-Line Parameters:" and entering in a command line.  But for multiple games all at once.
This will not change anything for the Emulator itself (i.e. Edit Emulator). This is only for the selected games' Custom Command-Line.
 
Setting up:
1) Copy "BulkEditCommandLine.dll" into your LaunchBox\Plugin folder.
2) Navigate to the folder, right click the dll file, click Properties then click Unblock.Using:
3) Start LaunchBox
4) Select a game (or games), right click and choose "Bulk Command Line Editor"
     - Type in the command line and click "Finish" (or hit Enter)
     - To clear the Command-Line for the selected game(s), leave blank and click "Finish"
     - To exit without making changes, click "Cancel"