> Q: I notice that the audio files on disk do not show an altered > modified > date - so where are these wave form displays being saved - on the > audio file > or inside the logic song? If I remember correctly, the images are written to the audio file's resource fork. Other than other filesystems where you have a fixed number of reserved bytes for each file to store permissions, creation date etc, the Apple filesystems can use an unlimited amount of space to write information _about_ a file outside the actual file data. If you export these files to another system using software that is aware of this (for example by copying it to a Windows-formatted drive attached to your mac), the information of the resource fork will be placed in separate hidden files. The resource fork holds things like the icon, the filetype and application it should be opened with (this is why OSX can remember that two files with the same extension should be opened with two different applications), and anything any specific application wants to add. I believe this is where Logic puts the waveform image. > Q: I am interested in possibly going back and forth between logic > and Pro > tools LE - and at different times using the same audio files for both > platforms. Assuming I am not doing any destructive editing - is it > OK to use > the same set of files for both platforms - or do I need to make > duplicates > (I'd rather not)? You won't need to, but it might be nice for security (however you could also just backup now and then - you should do that anyway). :o) > Also, how does this wave form display get dealt with by going back > and forth > between the two platforms? I don't know how PT deals with waveform images, but I guess Logic and PT will either each create their own waveforms and leave the other one's image alone, or they will be able to use each other's wave form images, or, the least likely scenario, they'll conflict somehow and will keep creating new waveforms each time you change from one to the other. Anyway, since the waveform image is non-vital information that can be recreated whenever its needed, I wouldn't worry about it too much. Even if you did destructive editing on either one of the platforms. Maurits.