Check on the net for Boating Supply Companies, they will have speakers, players, and even small PV units.
Best part of using this type of company for your equipment is that since they are designed for boats, they will be
water proof instead of water resistant.
I applaud you wanting to try different music types but a lot of the research has been done already along these lines.
Rock, Hard Rock, Heavy Metal, Grunge, etc., have all be shown to be very detrimental to plant growth and health.
Jazz is dependent on which form is being played, soft flowing styles do best.
Classical, as long as you leave out things along the lines of the 1812 overture, plants respond very favorably.
Redhawk