1. What kind of error are you getting when trying to run the app on the jre? I'll test this out again when I get a chance, but I don't believe there are any issues running the app other than java home maybe not being set. 2. You just need to use the path to the NAS. For example, //NAS_NAME/PATH_TO_SHARE. The computer you are running the sever on must have permission to access the path. 3. I can't say for sure. The current download uses the windows version of ffmpeg. I can't make any promises that the server would run and transcode files without any issues on the pi 2 since I do not own one to test on. I would recommend you use a computer you already own until the app is a little more mature before buying anything new.