File (AVFile Content File Selector) : Path of the audio file
Audio Layer (Number) : Index of the stream in the file (zero by default can be used to change the audio source (language, track... ) should not be confused with the concept of channels (Left, Right...) audio file
Transport (Transport) : Transport of the audio file
Audio Level (Percentage) : Audio level of the audio file, this is in percentage unit, and can be used as fade in and fade out of Element tracks.
To amplify the signal, see AudioStreamerSettingsSettings from the Audio Streamer
Thread Count (Positive Number) : Number of CPU threads reserved to decode the compressed audio stream.