At first, you have to open the MP3 or other audio or video file you want to split. To do that press on the "Open" button on the toolbar or select "Open" from the "File" menu.
You can also drag and drop the audio or video file to open it.
Step 2 - Specify Output Format Settings
Press on the "Output Format" button to specify various output format settings or leave the default ones.
Step 3 - Get the Result
Lastly, select "Split In Parts" from the "Cut" menu and in the screen that will open, specify the number of parts to split into.