When the eldest children were very small and my most powerful system was a P100, we downloaded some wav sound-bytes from the net and made appropriately named commands for bplay to play each of them. They could then use the VT-420 terminal in the livingroom to play these from bash. They learned how to play several in a row using semicolons between them. They also learned to use tab command-completion to help view and select the right one. The youngest, then aged three, could simply press up-arrow and enter to play them over and over again until the parents had enough.