We need sounds for geoscape events:
finished transfers
promotion
research finished and proposal
construction finished
production completed and so on
this is a complete list of all message types
MSG_INFO,
MSG_STANDARD,
MSG_RESEARCH_PROPOSAL,
MSG_RESEARCH_FINISHED,
MSG_CONSTRUCTION,
MSG_UFOSPOTTED,
MSG_TERRORSITE,
MSG_BASEATTACK,
MSG_TRANSFERFINISHED,
MSG_PROMOTION,
MSG_PRODUCTION,
MSG_NEWS,
MSG_DEATH,
MSG_CRASHSITE,
some of them can use the same sound - e.g. sounds/misc/newmission.wav is used for MSG_TERRORSITE, MSG_BASEATTACK, MSG_UFOSPOTTED and MSG_CRASHSITE