I dont know. I own a mac since 8-9 months and had no need for creating and extracting nlpacks. Since I have some free time (Had my exams last week), I wanted to check out new tracks.The missing NlPackager for Mac made it impossible. So I started to develop this tool 5 days ago.There is already a TrackExtractor for Mac, but only for OSX 10.6-. I dont know why the developer never compiled the source code for intel mac (I mean, he only have to recompile for new architecture, without doing something on the source code).However, I made it now