SACD Software Question

Dennis,
No.
Some are SACD only and will only play in a SACD player.
Some are "hybrid" and have the SACD part as well as the redbook part.
If new, they are usually marked as to what they are.
Good Luck!
John

No. The ones that do will be labeled hybrid.

I would add that there is also another layer on SACD's. That is a two channel only layer. So, with a hybrid SACD there would be three total layers; multi channel SACD (3 to 5 ch), 2 channel SACD, and redbook CD.