This is an image of the first page of the Wife of Bath's tale from the Ellesmere manuscript, widely considered to be the most beautiful of the Chaucer manuscripts.
This is an image of the Wife of Bath from Cambridge Manuscript GG 4.27.
Marie Boroff reads lines 1-22 of the Wife's Prologue aloud in Middle English.
John Farrell reads the Wife of Bath's Portrait from the General Prologue.
The Chaucer Theater presents The Wife of Bath. Here's an audio clip sample from their website.
This page, provided by Harvard, offers ten lessons that start with a general explanation of the principles of Middle English pronunciation and move on to actual practice with the tales themselves.
This is a helpful glossary of Middle English terms often used in Chaucer. The 100 most common words are denoted by an asterisk.