If you want an AI-powered audio editing tool that can automatically resize and remix tracks, TuneBlades is worth a look. The tool lets you extend or shorten songs while preserving melody and vocals, which is handy for content creators who need to trim or stretch tracks for ads, video narrations, live shows or other uses. It can export in high-quality formats like mp3, wav and m4a, and works on MacOS and iOS devices.
Another tool worth checking out is Descript, which has a variety of AI tools for video and podcast editing. It's geared more toward video editing, but its multitrack audio editing abilities can be used to remix tracks. Descript also has AI tools to create clips, to generate audio and video quality boosts and to create speech. It's geared for marketing, sales and learning and development teams, with pricing starting at $12 per person per month.
For a more complete package, Podcastle is an all-in-one web-based content creation studio. It includes a full featured audio editor with AI noise reduction and royalty-free music that can help you fine tune your tracks. Podcastle also supports team collaboration and has a variety of tools to create polished podcasts and videos, making it a good option for content creators. A free trial lets you try it out to see what it can do.