Fantastic patch, guys! I played through the whole game on Mednafen and aside from a few hiccups that I'm not sure are an issue with Mednafen or not (as I do not have a Saturn myself - but that might change in the near future), everything is looking great so far. No crashes or anything, just a few moments where the boss theme cuts out and the sound is broken for a while. All in all, I can see this becoming my definitive way of playing the game once any lingering issues are ironed out/the sub version receives subtitles; coming from someone who grew up with and loved the Playstation version, the improved visuals and sound on the Saturn version blow it out of the water.
For reference, I played on Mednafen 1.26.1 as well, and ran into issues with broken sound, all seemingly related to points where the standard boss theme plays:
-at the Saline Slimer boss fight
-when you warp into Meribia and help Jessica fight off the Vile Tribe
-at the fight against the Vile Crustacean in Vane
-at the fight with the Black Dragon - I found that the Dark Songstress' song doesn't want to play here either even though it played just fine in Pao
-during the Gades miniboss fights in Althena's Fortress
I'm leaning towards this being a Mednafen issue if only because bishopcruz is using the same version of the emulator as me and I've tested the last two points using an unpatched image of the game and run into the same problem with the music cutting out and the sound becoming muffled in the Japanese version as well, the only difference being that the Dark Songstress' song does play before the Black Dragon fight on my Japanese image of the game in Mednafen.
I can't thank you guys enough for working on this patch, and I look forward to seeing future progress on it!