hey guys, newbie here. i found this topic through Google and i know it's old, but i figured that i'd make my contribution anyways
one of the only "pirate metal" bands i know of is Equilibrium. although they're not really piratey lyric wise (it's actually in German) some their music has different pirate elements to it: http://www.equilibrium-metal.de/
they have some mp3s to download on their site, i suggest Shingo Murata, Widars Hallen or Tote Heldensagen (parts of the last two sound piratey) those are the only three on their site that they have for download. other songs of theirs are Die Prophezeiung and Met.
just a word of warning, they're Death/Black Metal, so have fun with it
