First of all: v8.3.2.80621 is 2 years old (march 2009). For a list of releases :
:link:Maybe consider upgrading?
Now: what can be wrong?
I assume that in iGO the volume is up all the way? (on "Map" screen go to "Menu" > " More..." > "Settings" > "Sound and Warnings" and push the slider to the right completely)
Or is there a hardware or device setting for the volume? Some devices have volume control as part of the device's OS in the general menus, and some work in conjunction with each other. So if there is one, turn that up to full volume as well.
Next the voices. The voices can be soft recorded. Another voice can make a lot of difference!
Finally, you can make changes in sys.txt. These are the lines :
[sound]
queue_length=200
ding=0 ;
dynamic_volume_type="1"
os_volume="255"
dynamic_volume_voicemaxspeed="0"
dynamic_volume_voice_volume_max="200"
sound_volume="200"
os_muted="0"
voice_volume="200"
These lines go in the sys.txt file. Just copy and paste them with a text editor. Don't forget to make a back up copy first.
Or the easy way: go to this post :
http://www.navitotal.com/showthread.php?1837-Working-iGO-8.3-from-my-device,download and replace your iGO build