MP3StickMan is an application that manages the MP3 file upload to your USB music stick. You can also upload other formats your stick supports, eg. WMA, OGG, WAV, etc. It keeps track of your music directories and also about the files you uploaded. The tool will create a new subset of files from the music library each time you upload a new file and sees that your collection on the stick has random file collections. After a number of uploads, when all the files are used once on the stick, the first files are reused. But the composition will always be different. You can always create different collections based on your mood.