This is something that I would be interested in also - I have extensive playlists on a separate ubuntu desktop that I would like to import into LMCE.
I understand an .m3u file is essentially just a list of paths, correct? Would the script need to replace this path with "/mnt/device/76/public/data/music" or whatever, or would the script only be interested in the last part i.e. the filename?
dothedog, do you want to get together on IRC at some point and attempt this together? My scripting skills aren't amazing, but two heads will be better than one.