I've posted the below in the Mac forum too but, as it is specifcially around digital music, I thought I'd also post it here in case anyone has tried to do what I am contemplating. Not being 100% certain on precisely how external hard drives do their job I'm posting this just to ensure I am not going to try something that will just not work. At home I have a Windows XP PC running Media Centre and am in the process of riping albums to FLAC. I have also bought a Seagate FreeAgent 320G external HDD and plan to copy all of the FLAC (or possibly even rip the remainedr direct) to it. I suspect for ease of handling the copies of the FLAC music should go into a folder of some sorts on the drive. The reason for this copying is for an impending period of working overseas. I want to take my music on a HDD with me, not the CDs. Now, once I get overseas I need to be able to 'manage' the music/folders on that Seagate with a MacBook, primarily just to get the music onto a NAS, which I plan to buy out there, so it can be played with a Sonos which I can also likely buy out there. The main concern I have is that the Mac will either not be able to 'read' the folders etc which have been created with a Windows PC or, even worse, will not be able to even see/access the drive. I know the drive is straight ''plug and play and requires no formatting or software, I'm just not so sure they are usable by a Mac as much as they are a Windows PC or, more importantly whether they are usable/readable by one when they have been uploaded by another. Any thoughts on this appreciated. There's no major problem if it won't work, I'll just grab someone else's Windows laptop and manage the music to the NAS with that. I would though like to be able to use the Seagate as a hard disk back up for the Mac if that was possible.