Do you need to convert large text files into audio files? Here’s a helpful tech support video from Urban High School that walks you through converting digital text in to a MP3 file. You can then listen to this file on your computer or iOS device.
There’s also Text to Speech in the Safari Browser: Using a Mac computer. Open up Safari and you can highlight text and have your Mac read a web page text to you. Instructions
If you’re a Google Chrome user you’ll need to add Speakit! through the Google Chrome Store.