Download some editing software. If you have professional aspirations, you may want to invest a few hundred dollars in a high-end audio workstation like Logic, Pro Tools or Cubase. If you just want to edit for fun or learn the ropes on a small budget, you can purchase a budget program or download a free program like QTractor, Audacity or Ardour.
Open your software and prepare your music for editing. If you need to record a song first, use the program's "Record" function (sometimes appearing as a large red circle or dot, like the "Record" button on a remote) to record your song. If you want to edit a pre-recorded song, use the program's "Import" option (often found under the "File" menu at the top of your screen) to load the song file.
Apply effects to the song. Each recording program has an "Effects" menu, which sometimes appears on the screen by default, but sometimes appears on the menu bar. Choose different digital effects to alter the song. If you recorded the song using tracks, you can apply different effects to each track. See "Tips" for more about tracks.
Adjust your volume levels. Most recording programs include a peak meter, which looks like a vertical meter with colored lights that bounce as the song plays. The lights may appear green, yellow and red. If you notice the lights turning red, turn down your master volume. The red lights serve as a warning, as excess volume can result in clipping (distortion) in the audio. If using multiple tracks, adjust the volume on each track until the main mix sounds balanced and perfect.
Cut up and rearrange the song. This is useful for remixing. Most recording programs feature a cutting option on the menu bar or tool bar. The option may read "Cut" or "Split," or it may simply look like a pair of scissors on the toolbar. Use the option to divide regions of a recording (in other words, to turn one solid recording into two recordings). Divide the song in places that you want to duplicate, move or remove. For example, if you want to duplicate the chorus, cut the beginning of the chorus and the end of the chorus, and then copy and paste the middle section to create extra choruses. Use your mouse to drag the divided portions around.
Equalize your song. EQ, or equalization, refers to the process of mastering the song by creating the perfect balance of high and low (treble and bass) frequencies. For example, if your song has a lot of low sounds that result in a distorted mix, you can raise the treble frequencies on your EQ grid to create a brighter mix. Locate "EQ" on your "Effects" menu, virtual mixer or menu bar (depending on the software).