Cakewalk Instrument In-Project volume problem

[Little Cute Thing]

I'm absolute beginner and I don't know why when I play on program, the volume of the Instrument are very quiet
But when I export and play it or even record with the screen capture, The volume are perfectly fine.
The audio track is also find when play on program, so I don't know why and how?
I can't find any solution on the internet so I need your help please, thank.

 

Edited August 30, 2020 by Little Cute Thing

[reginaldStjohn]

I think what you are hearing is the MIDI velocity of the TTS notes might be low.  When you preview things it often uses the highest midi velocity so it sounds louder.  It actually doesn't sound that soft in your video when playing it in Cakewalk. If you look at your meters the audio track is hitting -2.7dB which is really hot. It should probably be turned down so it it showing maybe -12 dB or so no the meter.

You can make the piano part louder by turning up the volume, the input gain on the audio track and/or making the midi notes have higher velocity. 

I don't know why your exported audio would sound louder except that you may have the audio player volume turned up louder?

[Little Cute Thing]

hello, thx for help
But I want you to see another video because I think the first one is not obvious