Please visit http://pally.phys.msu.su/
Here is freedownload oscilloscope using sound card in the PC.
Any sound card can be used. I am using this for my hobby experiments in electronics. It should also help you
Displacement, velocity and accelertion are related to each other as a function of frequency. It must be understood that the readings be of the same type or they eill not agree. In general it is difficult to get any two readings pricisely agree with each other.
You may lok into...
