As you can see, I moved your question here to the iPAD section.
Have a look through the Machinarium for iPad2 Issues
topic and see if anything mentioned there helps you. If nothing you find there brings your soundtrack back to life, visit the About
page where you will find a way to contact the devs directly with your problem.
We'd appreciate if you'd write back when you find a solution to your problem.
got your question straight in my head!
You were asking why the game did not come with the soundtrack - NOT that the sound was not playing on your iPAD.
The answer is simple: the soundtrack doesn't come with the iPAD version. If you want the soundtrack, buy it separately from Floex's website