the problem is not how to do it as it's easy "arc -m0" or from freearc just compress the folder with no compression (m0) then recompress it with srep+LZMA
the problem is why he is using it

I'm also confused
does it mean to get a non-compressed file to make srep+LZMA more powerful compressor ?? or Just For speeding-up compression & decompression ?? I have noticed that it has better ratio than using Maximum arc O.o So any One here could explain to us why using store method ??