The WEMs folder contains all of the original WEM files needed to play back the audio, among some other stuff. I included the original text file I used to log all of the file names and generate the TXTPs. I also included a volumes file containing normalizing multipliers that I also generated for use with the TXTPs since they're all so quiet. These are purely extra and serve no purpose for playback.
The WEMs folder also contains some WAV and AST files. The AST files I threw together manually, which mostly serve as multitracks for the gym leader battles. The WAV files are simply there to resample unmatching WEM files, which don't play back through TXTP correctly.
Forgive me if this isn't super professionally done, as again it was mainly done in a way that matched my personal preferences. However, I think it should at least be helpful for getting the music out there. Also, somebody please let me know if you find any notable mistakes with the music.
I've been going through the files converted from the TXTP's and it's honestly so much better!
I noticed that the track you titled as "bgm_ss_unknown02" is the ending to Route 10 (bgm_ss_r_04). When you go from route 10 to Wyndon for the first time, it switches to that track. To fix this, I edited the .txtp file to have the intro to route 10, play the main part twice, and then the ending.