I plan to invest time in Linux but have been too busy to try out just anything. So I'm trying to layout first, the ways & software in which I could use the same data files under each OS: I need to avoid investing time into installing and learning software where my data is limited to running it under Linux only (or having to modify the data for it to be used when I'm back in the Windows). My only experience so far with seamless integration of data & multi-OS functionality has been with Firefox, the files it saves load up and look the same way whether I use Firefox in Linux or Firefox in Windows to save them ( (but then... it does not edit them, so it is a different situation) Does Audacity, which is available for both Windows and Linux, save the files it edits the same way in each OS? And what about Gnumeric? Which other fairly common programs of daily use, will save edited data the same way in Linux (without resorting to Wine), and in Windows?