Create template that applies to Singular Products with Oxygen or if you have already created then edit.
Add a Code Block where you want to display the product slider.
Advanced > Size & Spacing > Width: 100%.
PHP & HTML:

I have added flexslider js and css CDN live link. So you can do on your server also and put your server link.
Add Style CSS:

Last add javascript code:

You can see more example from here http://flexslider.woothemes.com/index.html
If you any question feel free comment below