If you are looking for a simple audio editor, then you should download the voice changer app from Google Play. 

This voice changer app can be used for voice changing. It is a useful tool for making unique audio effects. The voice changer can be used to change the sound of your voice, or add special effects to your audio. For example, if you want to sound like a robot, then just speak robot sounds or sounds related to robots. The voice changer app also allows you to edit the music. This means you can add effects to your music.

You can cut out a part of your audio file and use it in any application or just play it in the background. The cutting part is supported by audio file formats such as MP3, AAC, WAV, M4A, AMR, APE, etc. You can choose any music in your device and make a ringtone.