Use Microsoft Teams to have students read passages out loud and it will give you (and them) feedback on pronunciations, omissions, repetition, etc.
Digitalbook.io
Contains free audiobooks for English language learners
Loyal Books
Loyal Books offers free public domain audiobooks in tons of different languages, including 80 free Spanish-language options.
LibriVox
LibriVox offers free public domain audiobooks created by users. Volunteers have read public domain books and made them available for download on their website