The Ultrasabers launcher can import either LSU or WAV.
If the files you downloaded are already in wav, all you need to do is make sure the sample rate is 48000.
Here's how I've done it:
- Create a new folder, call it 48k
- Open Audacity
- Ctrl+A to select all your soundfont's files, drag and drop them into Audacity
- They'll each show up as their own track and it might say something like Mono, 22050Hz, 16-bit PCM
- Do not hit Play!
- Assuming the sample rates are something other than 48000Hz, you'll need to fix them. To do this, (I'd first change the Project Rate in the bottom left just to be safe) Ctrl+A to select all tracks, go to Tracks->Resample, and select 48000.
- To export everything, Ctrl+Shift+L and export everything into the folder you created.
- Now you'll need to make your Diamond font. You can either start from scratch, or choose a default font as a starting point.
- Connect your saber to the Ultrasabers Launcher and open the Diamond font wizard. For simplicity, use the Express wizard to quickly create a placeholder with some colors you like. Now you can go into the Advanced wizard, select the slot where you wanted the new font, and from there you can swap out each effect's sounds for your new ones. An important thing to note with the Diamond editor is that sound and RGBW effects are linked together as one Effect. So for best results, you can tweak the RGBW animations to be about the same duration as the audio.
- After you've added all your new sounds, you shoud save the font to your computer, and finally click Write Effects. Your saber will reboot, and you can unplug it and test it out!
May the Force be with you!