I'm not entirely sure how Festalon was programmed, however I have noticed that some NSF's will not work on this player. SDB appears to be one of them. I do suggest that you use Nosefart to play this NSF. That's the player I use for ripping and if something doesn't work I dont try other players other then GNSF. What I had to do with this NSF is call a subroutine that was part of the bootup code. Also the Super Dodge Ball NSF is a unusual Technos format, however you can tell it's Technos from the sound of the music.

Thanks for the comment on the Nightshade rip. Beam Software rips are a major pain to rip. I've also ripped Aussie Rules Footy,this NSF is incomplete at the moment. Some DPCM samples are missing in the rip. I'm going to try and recover those soon. Matrixz has some Beam Software rips as well.