Teenage Engineering PO-33 Pocket Operator KO Sampler/Sequencer Kit Maker

KnockOutKitMaker.bat

@ECHO ON
cd %~dp0
set /a missing=F
if "%~2" == "" (
	set missing=T
) else (
	if "%~1" == "" ( set missing=T )
)
if "%missing%" == "T" (
	echo At least two input files must be specified.
	@PAUSE
	exit /b
)
if not exist ffmpeg.exe (
	echo ffmpeg.exe not found!
	@PAUSE
	exit /b
)
if not exist KnockOutKitMaker-SILENCE.wav (
	ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -acodec pcm_s16le -ar 44100 -ac 2 -t 0.2 KnockOutKitMaker-SILENCE.wav
	if %ERRORLEVEL% neq 0 (
		echo ffmpeg.exe quit while making "KnockOutKitMaker-SILENCE.wav" with error code %ERRORLEVEL%
		@PAUSE
		exit /b
	)
)
if exist KnockOutKitMaker.txt del KnockOutKitMaker.txt
set number=0
goto skip
:again
echo file 'KnockOutKitMaker-SILENCE.wav'>>KnockOutKitMaker.txt
:skip
echo file 'KnockOutKitMaker%number%.wav'>>KnockOutKitMaker.txt
if exist KnockOutKitMaker%number%.wav del KnockOutKitMaker%number%.wav
rem ffmpeg -i "%~1" -filter:a loudnorm=print_format=summary:linear=true:dual_mono=true -acodec pcm_s16le -ar 44100 -ac 2 KnockOutKitMaker%number%.wav
ffmpeg -i "%~1" -acodec pcm_s16le -ar 44100 -ac 2 KnockOutKitMaker%number%.wav
if %ERRORLEVEL% neq 0 (
	echo ffmpeg.exe quit while processing "%~1" with error code %ERRORLEVEL%
	@PAUSE
	exit /b
)
set /a number = number + 1
shift
if "%~1" neq "" goto again
if exist KnockOutKitMaker.flac del KnockOutKitMaker.flac
ffmpeg -f concat -safe 0 -i KnockOutKitMaker.txt KnockOutKitMaker.flac
if %ERRORLEVEL% neq 0 (
	echo ffmpeg.exe quit while making "KnockOutKitMaker.flac" error code %ERRORLEVEL%
	@PAUSE
	exit /b
)
del KnockOutKitMaker-SILENCE.wav
for /L %%i in (0, 1, %number%) do del KnockOutKitMaker%%i.wav
del KnockOutKitMaker.txt
if exist ffplay.exe ffplay -autoexit KnockOutKitMaker.flac
@PAUSE

I feel like I should get into the market myself by making an open source device that actually does what the Knockout claims it does in the same <$100 range. But I'm not a hardware guy: I'm a software guy.