Glad you got it sorted out…but a couple of things that might help here….
As fizze explained to me in his intimitable tongue-in-cheek way 😛 in this thread:
http://forums.fireflymediaserver.org/viewtopic.php?t=5642&postdays=0&postorder=asc&start=0
With a little “cleverness” in the way that you set up your directory structures on the NSLU2 and in Windows, as well as by storing the .m3u’s in the right place with relative paths, you would not need to modify the files after creating them in Windows.
One thing that Firefly will do on the scan that helps here is that he will automatically understand that “” should be “/” for the ‘nix OS.