Right-click one of the karaoke files you want to compress into a Zip file. From the pull-down menu, choose either "Zip" or "Compress." If using a Mac computer, the file is automatically compressed and saved into the same location as the original file. However, if using Windows, a Zip program loads onto the screen.
Select a location to save the zipped karaoke file to. This is done through the "Browse" tab in the lower-right corner of the compression software.
Click "OK" and the file compresses to the location selected.
Repeat the Zip file compression method for all other karaoke files you want to reduce the file size for.