I don't even think MS likes file extensions as they hide them bydefault, but since they won't remove that functionality due to legacy issues, it's going to be there as long as they keep moving the Windows code base forward. I'm just not a big fan of dragging legacy design decisions into the way Haiku works within itself. I'd rather see Haiku make the right design decisions for it's internal usage, and deal with other OS support in the external interfaces. In this particular instance, leaving the .wav at the end of the filename might be the correct route because if I choose to then encode the wav file into an mp3 file and want it to have the same name, not including file extensions, how does the file system handle that? Craig