****, not about UE4 (UE3 wwise for Remember Me), but maybe you’ll find these links a little bit helpful:
Plus check this book, it’s really cool and it uses UDK as an example (same again, not UE4, but principles are the same, I think).
BTW, wwise have a free limited licence option + UE4 integration.
And a very good tutorial — Wwise Project Adventure