If you want to apply effects or editing not possible in Mixcraft, you can work with an external sound editor. Make sure that you have already setup an external sound editor in the Preference dialog.
Right click on the sound you want to edit and select "Edit in External Editor". This brings up a dialog with two main choices.
o Edit a copy of the sound.
This option is the preferred method of editing a sound because if you later decide you don’t like it, you will be able to undo the edit. In addition, you can have Mixcraft automatically pick a name for the new sound, thereby saving you the trouble. This will happen if the "Automatically choose a new name for the sound" checkbox is checked. You can also simply type in a new filename or browse to find one.
o Edit the original sound.
This makes permanent non-undoable changes. You might choose this if the sound is extremely large and you can’t afford the disk space to make a copy. The con to this option is that it is not reversible!
Once you have picked an edit option, click the Edit button and it will launch the external editor with the sound. Another dialog box appears which waits for you to finish your editing. Make all the changes you want in the external editor, and save the file (in the external editor). Go back to Mixcraft and hit either Done or Cancel, depending on how the edit went. In the case of editing the original sound, it won’t make a difference. However, if you edited a copy of the sound, Cancel will delete the copy from your hard drive.