Click the "Start" menu button, and type "Nero WaveEditor" into the search box. Click the icon for Nero WaveEditor.
Click the folder icon in the top left corner. Double-click on the song file.
Click on and drag the waveform in Nero WaveEditor to select the part of the song that you want to remove. Click "Edit," then "Delete" to reduce the length of the song.
Click "File," then "Save As." Type in a name for the reduced song into the "File Name" field. Click the "Save As Type" drop-down menu, and select a format for the song. Click "Save."