With the Volume parameter in the Audio Section you will control the Volume of both: Video Files including an audio part and plain audio files such as .wav- or .mp3-files.
Note that playing back sound with a video layer eliminates the possibility to synchronize the video playback. If synchronized playback is demanded, please use ASIO tracks instead.
The volume channel ranges from -96 dB to +6 dB, this corresponds to the DMX values 0..65535.
The Audio Channel is 16bit, the default value is set to – 96 dB.
Please note, that for Widget Designer or other controlling applications, the range of values is 0 - 2, more information can be found in the parameter list.