The riofill utility randomly selects a list of MP3 files from a given directory and ensures they will all fit into the memory of a Diamond Rio portable MP3 player. Switches allow differently-sized Rios to be filled. By default, riofill uploads the playlist produced to a Rio player connected to the computer's parallel port using the Snowblind Alliance (SBA) Rio utility. Optionally, the generated playlist may be printed to stdout or saved in a file instead of being uploaded to the Rio.
