What my project was putting pictures on DVD to play a slide show with background music
I have a Sony Theater system and a Pioneer DVD recorder.Both say cannot read disk. I am burning to DVD -R disks. If I use Widows DVD Maker and same DVD -R disks it plays OK. I was having trouble getting background music to work properly using Windows DVD Maker and searched and read that your should use Windows Live Movie maker.
Also, be sure to burn to a DVD-R or DVD-RAM not a DVD+R, +RW, or -RW as these are not designed for DVD video.
Lastly, when burning a DVD be sure to burn at a nice slow speed (generally 1/2 of the max speed), otherwise it will not burn as deep/clearly and players with weak lasers will have trouble with the discs.