I used to use an older SSH app, but ever since I discovered (quite fortuitously) iFunBox, that's ALL I use. On the go, I do use iFile of course.
I've dabbled ONCE with sounds and all I had to do was download the sounds I wanted (it was a stock option), checked them off in WB, then resprung. Worked. If I skipped a step, I think once enabled, I selected them in sounds. That should be it.