This utility automatically generates MKWii BRSTMs from youtube links, or FFmpeg compatible audio files (most common extensions work). Made using NAudio (multi-channel handling), YoutubeExplode (youtube download feature), FFmpeg.NET (ffmpeg wrapper for C#), and VGAudio (WAV to BRSTM conversion).

The ffmpeg.exe binary needs to be located at C:\Program Files (x86)\ffmpeg\bin\ffmpeg.exe. That's the only dependency. You can download FFmpeg here.

I recommend running the project with dotnet run, or using the binary in the releases section. Afterwards, select the track you'd like to create a BRSTM for and paste a youtube link to your song when prompted. The resulting BRSTMs will be placed in .\brstms.

The application will allow you to increase the volume by a factor of 0-10 dB and speed up the song for the final lap, using a multiplier from 1.00-1.30 inclusive. You can also cut the song when prompted.

Here is a short video on installation and usage.