All in one Audio & Video Editor is one of the best application for tampering Music and Video file.

The app lets you edit your audio and video files. You can add or remove sections, change the video or audio format, add or remove audio, change the pitch and speed, add or remove background music, and more.

It supports many different audio and video formats, including mp3, wav, flac, aac, m4a, m4b, m4v, mov, m4v, mp4, mpeg, wma, wav, wmv, gif, txt, and many more.

You can use it to cut your songs or videos into different parts, which you can then join back together. It lets you edit your audio files by adding or removing sections.