Convert multiple files to bgm_(original name).wav (Default -o pattern is ?f.wav)
vgmstream_cli
vgmstream_cli -o {{path/to/bgm_?f.wav}} {{path/to/file1.adc}} {{path/to/file2.adc}}
vgmstream_cli
vgmstream_cli -o {{path/to/bgm_?f.wav}} {{path/to/file1.adc}} {{path/to/file2.adc}}