I'm at work, so I can't share any new screenshots right now, but I can tell you that the visual part of the theme works at least, I installed it last night. I'll try to check the bgm.bcstm file once I'm back home, but in YATA+ at least it played back without issues (Size is 1MB). Could it be that YATA+ ignores the 19kHz requirement? I downloaded it pre-converted from that brawl custom theme website since I didn't want to install some extra programs for the first theme, but it seems I may have to do the conversion process from scratch.