On some configuration, quodlibet freezes between songs. The bug has been fixed upstream (issue 49); this is a backport while waiting for QL-2.2 to be released. Reproducible: Sometimes
Created attachment 209190 [details, diff] Backport of the gapless patch.
Created attachment 209192 [details] Modified ebuild
2.2.1 is now in portage, sorry it took so long to get to this bug.