How about 64bits 
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the eXtreme karaoke software is 32 bits application.
Let me expand on the points!!!!
The first thing to know is that 64-bit versions of Windows can run 32-bit apps,
but 32-bit versions of Windows can’t run 64-bit software.
if your PC and apps support it, you should be running the 64-bit version.
Even if every app you run is a 32-bit app, running a 64-bit OS is still going to be more secure and reliable.
A developer that wants to provide a 64-bit version of their program has to do additional work.
They have to make sure the existing code compiles and runs correctly as 64-bit software.
They have to provide and support two separate versions of the program, as people running
a 32-bit version of Windows can’t use the 64-bit version.
