Different functions, different interfaces, and different applications.

1. Different functions: the audio editor mainly performs audio editing, synthesis, segmentation, format conversion, etc., while the multi-track editor can mix multiple audio tracks and perform various processing on the audio. Such as adding effects, adjusting volume, etc.

2. Different interfaces: Audio editor interfaces are usually relatively simple, while multi-track editor interfaces usually include track controls, timelines, etc., making operations more flexible.

3. Different applications: the audio editor is suitable for simple processing of audio, and the multi-track editor is suitable for complex processing of audio, such as making music, sound effects, etc.