Effect chain on the linked track sure sounds like compression and then some chorus, and then reverb to me. The sound is a little too 'watery' to my ears for it to be a simple delayed copy - sorry to disagree with others on that point here. The giveaway is the very last strummed chord. That's chorus or even a flanger there without a doubt.

Also sounds like some OLD strings, or the highs rolled off quite a bit. I think it could be a piezo under saddle transducer, with the highs dialed out to get rid of the quack.

An I-beam will sound much better than this particular song example; at least all by itself. I-beams do a decent job letting one hear what the guitar actually sounds like. This recording is just the sound of the pickup - could even be a soundhole magnetic pickup by the sound of it. There's no 'wood' to the sound.

-Scott