the answer to both of your questions is yes!
I have a customer here in California who has many custom Indian kits which load tablas, etc. from a USB drive. You can find information from him at the http://www.korgforums.com/forum/phpBB2/viewforum.php?f=50

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George Kaye
Kaye's Music Scene
Reseda, California
818-881-5566
www.kayesmusicscene.com
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George Kaye
Kaye's Music Scene (Closed after 51 years)
West Hills, California
(Retired 2021)