Just bought this because it seems to be a very handy tool. But there are some bugs in the paid version. If the file dosen't contain a genre tag the alias will be created on the highest directory level of the iPod - and NOT inside the newly created music folder.
If the file also doesn't contain an album tag the alias will not appear inside the folder of the artist. The artist folder stays empty and the alias will be created on the highest directory level of the iPod, too.
This leads in a bunch of folders and aliases on your iPod volume.
Hope the developers will fix this soon.