[megaloman]

Код:

@Echo Off
	Set "FileIn=Z:\Box_In\1.txt"
	Set "FileOut=Z:\Box_Out\2.txt"

	>"%FileOut%" (For /F "usebackq delims=" %%s In ("%FileIn%") Do (
			For /F "tokens=2,4 delims==&" %%i In ("%%~s") Do (Echo %%i %%j)
	))
Exit /B 0

С контролем наличия в строке

title= и &artist= они постоянны »

Код:

@Echo Off
	Set "FileIn=Z:\Box_In\1.txt"
	Set "FileOut=Z:\Box_Out\2.txt"

	>"%FileOut%" (For /F "usebackq delims=" %%s In (`2^>nul FINDSTR /R /C:"^.*title=.*&artist=.*" "%FileIn%"`) Do (
			For /F "tokens=2,4 delims==&" %%i In ("%%~s") Do (Echo %%i %%j)
	))
Exit /B 0

[DJ Mogarych]

Код:

powershell -command "(gc C:\temp\1.txt).trim().Split('=|&')[1,3] -join ' ' > c:\temp\2.txt"