Hmm, yeah that's incredibly slow. Sounds like a really slow USB drive, but can check by seeing how long a copy of the same files to the drive takes using the finder. The app shouldn't be much slower than dragging and dropping the file yourself. It has to be a little slower just because it has to look into each file to see if it is apple lossless, and has to do the convert if so. But that doesn't really take very long per file. If you find the app is more than twice as slow as just a raw copy of the same files, I'd like to know about it.