Remove explicit language from recorded songs by reversing offensive phrases in Audacity. Load the song into Audacity by selecting "File > Open" from the file menu. Press the "Play" button and listen to the song until you hear an offensive phrase. Pause the song and select the portion of the timeline during which the offensive phrase plays by placing the cursor at the start of the phrase and depressing the left mouse key, then dragging the cursor to the right, to the end of the phrase. Select "Effect > Reverse." Repeat for all offensive phrases in the recorded track.
Change the length of a song by repeating musical portions in Audacity. To repeat, or loop, musical sections select the musical section in the timeline with the cursor. Zoom in on the selection by clicking the magnifying glass with the "+" symbol from the menu bar and adjust the start and end points. Select "Effects > Repeat" to repeat that section as many times as is needed.
Extract musical loops from songs in Audacity by selecting the loop you want and exporting the selection. Find the portion you want to loop in the timeline and zoom in using the magnifying glass with the "+" symbol. Adjust the adjust the start and end points until you have an exact loop. Select "File > Export" Selection to save the selection.
Change the volume of a song in Audacity by applying volume or compression effects. Select the entire song by pressing "Control" and "A" simultaneously. Select "Effects > Amplify" to adjust the volume -- move the slider to the right for more volume and to the left to lower the volume. Select "Effects > Compression" to add compression. Compression increases lows and reduces highs and is often used to create radio-ready loudness.
Adjust the EQ or equalization of a song by pressing "Control" plus "A" to select the whole file and selecting "Effects > Equalization" from the file menu. A graph showing the amount of EQ on the Y axis and the EQ range on the X axis appears. An adjustable blue line in the center allows you to adjust the EQ. Double click at the start and end points of the blue line. Then double click at the EQ range you wish to adjust and drag the point you create up to increase the EQ at that range or down to decrease it.