There are two "burnable" DVD formats: DVD-R and DVD+R. DVD-R are compatible with 90 to 95 percent of players, while DVD+R are compatible with about 87.6 percent of players. (The players that can't read -R's can read +R's and vice-versa.)
The copies of our films available through amazon.com are burned onto DVD-R discs. Our own DVD burner burns DVD+R discs; our player, like most newer players, plays both formats just fine.
If, for any reason, your player cannot play the DVD-R disc, we will be happy to replace it with a DVD+R copy. Our e-mail address is on the back of each DVD slip-case.
Son of a Seahorse should be coming out in early June.