While I'm sure the built-in BDP applications work for some, personally I couldn't be without the MPad App.
As a long time user of iPeng, a superb independent App for controlling the various Logitech Squeezeboxes, I have become used to the benefits of a fast, responsive, and above all *well designed* interface enabling me to quickly and easily browse my music collection.
If I were James, I would have bought the MPad App on behalf of Bryston by now as, for me at least, it makes the BDP a joy to use.
In fact my *only* regret is the lack of a 'by year' button which, coming from someone who's day job is 'UX' and 'web technologies', I would suggest is a compelling endorsement for the quality of the product.