An AudioBuffer represents sound data that can be played by multiple sources.
This node is usually created in a library and referenced from Meta_AudioSound or Meta_AudioTrack nodes. These are positional.
string - Path to the audio file, which is loaded automatically and stored in RawData
vector - Raw audio file data (including headers), can be set directly if not specifying a file name
int64 - The time the raw data was last modified. Unix epoch (seconds since Jan 1 1970) stored as two 32-bit ints (LO,HI)