Please add a label - “Open WaveLab With” or “Always Open WaveLab With” Before “Recently Used Files”.
Or it would be like the problem the Italian user had with WaveLab opening in Chinese but having to write in Italian on this forum, for many users.
Even otherwise I think WL like all other Audio Editing software has to open all previous files by default, if there has to be an option, it has to be to uncheck a menu-box not to open previous files.