Please, only work on copies of your data, not the originals. Things could go wrong.
Open the Terminal and run the following command to install Homebrew:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
### Step 2: Install shntool, flac, and cuetools Once Homebrew is installed, use it to install the necessary tools for splitting the FLAC file:
brew install shntool flac cuetools