An application to set your vita volume level without using the volume buttons (useful if they are broken)
Set the value you want, 0 being the lowest and 30 the maximum (25 for AVLS forced vitas)
and then press square to reboot.
First you need the vitasdk installed on your computer.
Then go in the directory and type
cmake .
then
make
And if everything is setup properly you should get the vpk.