I'm not positive, but I think DVD-A's will play in a dvd player. But like you said, the high rez audio would not be in play unless it's an actual DVD-A player. (I could be wrong)

BTW....http://www.sa-cd.net is a nice place to go and read user reviews of SACD discs. It'll give you a good idea of which SACD's are better than others. I use the site quite often before making a SACD purchase.