A group representing the blind and other people with disabilities protested limitations to the new read-aloud feature on Amazon.com’s latest Kindle electronic reader Tuesday, arguing that the restrictions unfairly limit their access to e-books. The feature is still available for all books on the new Kindle, which was unveiled in February. However, the Authors Guild has expressed concern that the feature will hurt sales of audio books, so Amazon plans to give publishers and authors the ability to silence the text-to-speech function for their books.