The arrows point at the button which I'd like to improve.
The Loop button should contain something that symbolizes
the function. When you click the loop button it will loop vocabulary words, so ideally it should contain some arrows, either inside the existing button or make the whole button round with arrows.
It buttons below the Loop Button could also be redesigned, depending on how well the new button will integrate.
The other thing is the "upgrade" button on the bottom left: "click here to upgrade and get sound". maybe something shiny and eye-catching that integrates well into the site.
What inspires you and how do you envision the design for your business?