Wave Shield question: sample playback

I am currently working on a project which requires stored audio samples to be played back with no perceivable gap between them, and wondered whether the Adafruit Wave Shield might be able to achieve this.

Not having access to a Wave Shield to experiment, I'd like to ask anyone who has experience in using it whether:

  1. It is capable of playing one sound straight into the next, with no noticeable gap or "pop"?

  2. Samples can be looped to create a continuous sound?

I could of course achieve this using software (Ableton Live, MaxMSP...) but I'd really like to keep it computer-free if possible. Any comments/advice greatly appreciated!

Cheers!