iframe embed results in incorrect aspect ratio

Thanks for reading. I am trying to embed something on my site but it is not the height that it is supposed to be. I copied and pasted the following:

<iframe src=”//www.myflashstore.net/widgets/html5/?uid=79750&scheme=flatui-blue&share=true&total-plays=true” width=”750″ height=”510″ frameborder=”0″ scrolling=”no”></iframe>

but if you go to my page at krakbeats.com/beats you will see that the embed is NOT the height it is supposed to be, it is very short and even though I have scrolling=”no” in the code it still includes the scrolling bar. No matter what I change the height value to it stays the same, very short. I hope that makes sense, I don’t know anything about coding or web design.

Any idea why the height for the embed isn’t what it is supposed to be, any idea how I can fix this? I’ve been searching for the answer for weeks and tried a million different things but nothing works and it’s driving me crazy!

Any suggestions are greatly appreciated, thank you so much! Have a great day.