Upload audio files for talking videos

It would be great to be able to upload an audio file for a talking video, rather than choose one of the stock voices. The problem is that while there may be over 200 voices available, by the time you have filtered them for gender, language, age, etc. you often are left with only a few to choose from. Other AI services allow this feature, and it still should still be able to screen the files for appropriate content if necessary.