Be aware mortals!
I extracted sounds, renamed them properly (1,2,3,4,5 select, 6,7,8,9,10 move, 11,12,13,14,15 attack), then converted into valid .wav so RA2/YR can use it.
All what you have to do are following 2 things:
1. put files inside .bag file or copy paste them into RA2 folder if you are using Ares
2. Open Soundmd.ini then:
In [SoundList] paste this

1136=FlameTankSelect
1137=FlameTankMove
1138=FlameTankAttackCommand

And somewhere down paste this

[FlameTankSelect]
Sounds=ftnk1 ftnk2 ftnk3 ftnk4 ftnk5
Control=random
Volume=85

[FlameTankMove]
Sounds=ftnk6 ftnk7 ftnk8 ftnk9 ftnk10
Control=random
Volume=85

[FlameTankAttackCommand]
Sounds=ftnk11 ftnk12 ftnk13 ftnk14 ftnk15
Control=random
Volume=85


I did all job for you! Enjoy
~MasterHaosis