You should ask this question the author of the plugin in the comments where you bought the file.
Congrats on your sales!
Its not a wordpress plugin but you can embed it using iframe.
I have an audio player which pauses or stops other songs while new is being played if you are interested.
Try in the discussion section of the file you bought:http://codecanyon.net/item/jquery-banner-rotator-content-slider-carousel/discussion/1534434
I think 70% is more than enough. Combining the fact that the elite level was lowered from 300k to 75k, in this segment, Envato has done a lot for the authors.