Question: Is there a service that allows me to create unlimited audio files from text content for commercial use in my YouTube videos?

One good option is LOVO, an AI voice generator and text-to-speech software with more than 500 voices in 100 languages. It's got features like voice generation with perfect sync, audio and video editing, auto subtitles in 20+ languages, and AI script writing. LOVO also has collaboration tools with cloud storage and project management, so it's a good option for businesses and content creators.

Another option is Verbatik, which uses machine learning technology to turn text into natural-sounding speech in more than 600 voices in 142 languages and accents. It offers instant conversion, customizable voices and unlimited revisions. Verbatik also has tools like Script Writer AI and Sound Studio, and an API for integration, so it's good for marketing and multimedia presentations.

If you want a highly customizable option, Listnr offers lifelike audio conversion in more than 142 languages, including the ability to clone your own voice. It can handle a variety of formats, including MP4, MP3 and WAV, and has tools for podcast hosting and text-to-video conversion. With different pricing tiers for different needs, Listnr is good for short-form content creators, YouTubers and podcasters.