i have a lite-on sohw 832s burner and my panasonic stand-alone player, which is over 2 years old, is not supposed to play hardly anything but actual dvd movies according to the owners manual. in other words, no dvd-r's or rw's, mpeg, divx, and just about anything else u can name. well, to my delight, it actually plays dvd-r and dvd+rw. i have no idea why. i have some dvd+r i'm going to try also.
to start out, i would suggest trying dvd-r discs because they are supposedly more compatible w/ older players. and if u burn w/ dvd decrypter u can change the book type if needed. and do not burn above 4x. slower speed=higher success rate. give these a try and see what happens.