GameEx is building a database of all of your media (music, movies, roms, pictures, title screens, etc, etc, etc). If you have a lot of content and it's not local, then it will take a long time to build this database. I don't use GameEx for media in my cab, so I can't offer specific help there. However, you might want to upgrade your 100mb wireless router to something faster if you want to improve the performance a bit (during file copying). It probably won't help for streaming since you should still transfer faster than it's played. I would suggest launching GameEx again and letting it go for several hours. If you are concerned that it's not doing anything, you can monitor the log.txt file to see if anything is getting written to it. After each completed step GameEx will write information to that file to help in debugging.