Greetings! I am a relative newb with the iPad. I have a book to read but I have a pressing question. Can the iPad be used to sample music or sounds then played back through a larger sound system? I play music in a band and my PA board has a USB connection. I want to sample sounds (for example the jet engine at the beginning of Back In The USSR by the Beatles) and play it through the pA to start the song. If anybody knows IF this can be done or HOW it can be done, any info would be greatly appreciated. Thanks in advance for any help given.