User sound block

Would it be possible, in the new name to create a block or marker element that could allow the user to upload their own custom sound effects into the game? This could be similar to the poster system and could include features to add different effects to the sound such as volume, looping on and off and play at random. Perhaps it could allow for multiple sounds to be attached to play in sequence or randomly. This system would allow for more ambience and richness to the worlds created.