Playing Wav or audio files...

I’m new to Cubase and I wanted to know how to trigger a wav. file or audio file using my midi controller if possible.

Not directly within Cubase…you will need to load the wav into a soft sampler.

There are some freeware options

I like Shortcircuit (Use v1.1.2) for it’s relative simplicity.
http://vemberaudio.se/shortcircuit.php

UVI Workstation seems to get plenty of recommendations but I haven’t tried it.
http://www.uvi.net/en/software/uvi-workstation.html

There are probably other options but one of these should get you started.

Thank you sir.