Step#1
Open this file (located in "Sound\JELAIR-sounds" folder): JELAIRsounds.cfg


Step#2
Look for this section:

[Sounds]
Sound00=./Sound/JELAIR-sounds/Vspeed_80knots.wav, -700
Sound01=./Sound/JELAIR-sounds/Vspeed_V1.wav, -700
Sound02=./Sound/JELAIR-sounds/Vspeed_Vr.wav, -700
Sound03=./Sound/JELAIR-sounds/Vspeed_V2.wav, -700
Sound04=./Sound/JELAIR-sounds/Vspeed_check.wav, -700


Step#3
Change the value (-700) to the volume you want.

Values range from -10000 (representing very, very quiet) to 0 (ZERO) (representing full volume)
