I upgraded mine last year with a head unit that would support USB and MP3 via the face plate and I love it. Stick in your flash drive and you are good to go.
http://www.sonicelectronix.com/item_...mpaign=froogle
I also have a blackberry that supports Bluetooth etc, but I wouldn't want to fiddle around with signal interference, connectivity issues, commercials, dead phones, bla, bla, bla....
Just my 2 cents, I'm all about automotive audio equipment in boats, I've have several, and never had a problem. I also run a DB digital car amplifier and 2 cobalt 10s, all car audio stuff and all working quite well.
the best part is, flash drives DONT SKIP!!
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