Linux 32-bit: SoulseekQt-2016-1-17-32bit.tgz
Linux 64-bit: SoulseekQt-2016-1-17-64bit.tgz
See the Changelog for list of features and fixes.
Are you talking about a situation where the search results only list one file in a folder? If so, that's the behavior of the download folder function in the new client. If not, I get all the files in a folder queued when i select just one of the files and click 'Download Folder'.