Hi, I'm trying to help a friend with her non-profit website. She needs to be able to bundle files into a single file for easy downloading (and easy unpacking on the client). The files are pre-compressed sound files so further compression isn't really needed or useful. My first attempt used ZipArchive, which seemed to write ok, but I can't decompress it. (I tried to describe that problem in another email.) I'm now trying to compress more than one file to a GZipWriteStream. I copied and modified the code in the compressed method on FileStream to look like this: compressFiles "Write a new file that has the data in files compressed in GZip format." | zipped buffer file dir | dir := self directoryFor: 'hgo' language: 'arabic'. zipped := dir newFileNamed: ('foobar', FileDirectory dot, 'gz'). zipped binary; setFileTypeToObject. zipped := GZipWriteStream on: zipped. dir fileNames do: [:fName | file := FileStream fileNamed: fName. file readOnly; binary. buffer := ByteArray new: 50000. [file atEnd] whileFalse: [ zipped nextPutAll: (file nextInto: buffer)]. file close.]. zipped close. ^zipped It doesn't work. It seems to compress the first file ok, but the others aren't included. Is there a reliable way in Pharo to solve the underlying problem of packing multiple binaries into a single file? thanks much.