Write an article based on this "Install Audacity if necessary. Click File. Click Open…. Select a song. Click Open. Select your entire song. Click Effect. Click Change Tempo…. Increase the tempo. Click Cancel. Re-open the "Change Tempo" window. Check the "Use high-quality stretching" box. Click OK. Save the song as a new file."
If you don't have Audacity, first download and install it for your Windows or Mac computer by going to http://www.audacityteam.org/download/ and selecting your operating system, clicking the download link you want to use, and then double-clicking the downloaded setup file and following the on-screen prompts. It's in the top-left side of the Audacity window (Windows) or the screen (Mac). A drop-down menu will appear. This option is in the File drop-down menu. Doing so opens a File Explorer (Windows) or Finder (Mac) window. In the File Explorer or Finder window, go to the location of the song you want to edit, then click once the song to select it. It's in the lower-right corner of the window. Your song will be imported into Audacity. Click anywhere on the blue waveform in the middle of the Audacity window, then press either Ctrl+A (Windows) or ⌘ Command+A (Mac). You'll find this in the menu bar at the top of Audacity or at the top of the screen. A drop-down menu will appear. It's in the Effect drop-down menu. A pop-up window will appear. While you'll see a Change Speed… option in the Effect menu, using this option will also change the pitch of the song. Click and drag right the slider near the top of the "Change Tempo" window. It's at the bottom of the window. This will close the "Change Tempo" window. Due to a bug in Audacity that prevents you from increasing tempo, you'll need to use a work-around to apply your tempo settings. Click Effect, then click Change Tempo... in the resulting drop-down menu. The "Change Tempo" window will pop up again, and you should see the tempo value you chose earlier at the top of the window. It's near the bottom of the window. It's at the bottom of the window. This will apply your tempo changes to the song.  If you're not sure about your selected tempo, you can click Preview to listen to a small section of audio. If you don't like the way it sounds, decrease or increase the tempo, then close and re-open the "Change Tempo" window and click OK. It may take a few minutes for the tempo changes to finish applying. This will ensure that you don't accidentally replace the song's original version with your sped-up version:  Click File. Select Export. Click Export as MP3. Enter a name and select a save location (e.g., Desktop). Click Save. Click OK when prompted.