If you're running them on SP, then simply copy all the stream files from the downloaded mlo & replace all files inside an existing working DLC
Though some maybe most of them nowadays are encrypted so bear in mind that the problem are the mlos
wuss the problem man, just find an already converted SP (recommend MRPD) and delete all the files inside the inner rpf (example: replacement.rpf) with the files from the stream folder from the current DLC u trying to replace