Check out the newly updated Cantar de mio Cid website (https://miocid.wlu.edu) by Matthew Bailey (Washington and Lee U) and colleagues.
Also available:
Recitation of entire poem, MP3 audio (https://miocid.wlu.edu/mp3/cid.mp3)
Recitation of entire poem, HTML5 Video with subtitles (https://miocid.wlu.edu/main/movs/cid.html)
Newly updated Cantar del mio cid website