Turn your speaker volume down. This prevents any glitches in Mixcraft, such as record-enabled channels creating loud, unexpected noise.
Double-click the Mixcraft logo on your PC desktop. If you don't have a desktop shortcut, click "Start," "Programs" and select Mixcraft from there. It may take a few seconds to fully launch.
Click "File" and select "Open." Select the relevant song from the drop-down menu.
Press "Play" and gradually increase the volume to a suitable level.
Click "S" on the channel strip for each vocal recording you want in the a capella mix. This mutes everything except the vocals.
Tweak the gain slider dials for each channel to balance the volume of each vocal audio. Since there is no audible instrumentation, the vocals may sound a little strange to begin with. Mix the vocals so the lead vocal is the loudest and the backing vocals are of equal volume.
Click "Effects" and select "Reverb." Since this is a temporary mix, select one of Mixcraft's reverb presets rather than configuring your own. Reverb adds ambiance to an sound. Since the vocals are "nude," reverb will soften the edges. You can use this temporary acapella mix as a backing track to record to or as a starting point for a remix. To make it a full mix, click "S" on each vocal channel to deselect solo mode.
Click "File" and select "New Sub Group." Name the new track "Vocal sub-mix."
Click "Send To" on each vocal audio channel and select "Vocal sub-mix." This groups all of the vocals on one channel.
Click "File" and select "Export as Wav." When prompted selected "Stereo." This renders all of the vocal audio as one, high-quality lossless file. The vocals will be raw, without effects. This is the preferred export method if you want an a capella mix to use in a remix or derivative work. You still retain the original mix, but now have the vocals as a separate file as well.