I have been very unhappy with the CD service provided by LULU and by Amazon's createspace - the charges were just way too high.
I have now found a company that lets me produce CD's and DVD's
at a price even a schoolpupil can afford - $2 -
and postage in the USA is very low, and international standard airmail is reasonable. ($4)
I have so far put online my Corderius CD, which contains 50 odd colloquia, recorded in Latin-English-Latin for each line of dialogue, and then two variant version in Latin only (Alexander's edition, and Willymott's Edition) which tweak the original material slightly. This data CD also contains the pdf's I used and also the pdf of the exhaustive opera omnia version (Madrid edition)
I will be adding more material to this store - it takes a few hours to process one item.
I am currently recording Caesar's Commentaries on the Gallic war in a literalised English version - useful for a student to listen to,while holding the Latin text in front of them. Currently up to Book 3.