For those who prefer audio books, there are three narrations available on Audible.com, two of them by two of my absolute favourite narrators --
David Case and
Nadia May.
At Audible.co.uk, there is the
Nadia May version, as well as a 'dramatized' version with
Ian Carmichael (whose television versions of Lord Peter were definitive) and Patricia Rutledge.
Of course, all of the Dorothy Sayers books are available in the public domain in Life+50 countries, such as Canada, where FadedPage has a special
Dorothy Sayers page with proofread versions of most of her books available for the download.