Sure, You just need to scale the values so as your slider moves from .75 to 5.75, you move through frames 0-30. Simple math is your friend:
iSlider4Min = .175
iSlider4Max = 5.75
filmStrip "sliderIdent4", int(((kvSlider4-iSlider4Min)/(iSlider4Max-iSlider4Min))*30)*145, 145, 145
The UDO that I wrote could also be updated to take these things into account. I just wrote it as a quick example. But it could certainly be modified and made more robust.
p.s. you mention a range of .32 to 3.2, but in your example it goes from .175 to 5.75?