QUOTE(tuba_george @ May 22 2009, 07:38 AM)

I found it most effective to have a real teacher go through it with you, and I found it best when we went through aural as if it was an exam.
The only problem is that, unless you have multiple lessons each week dedicated to aural, you won't get that much practice (for years, I had 15 mins of each 40-minute piano lesson dedicated to aural, but all it meant was that I didn't outright fail aural). There is no other way that I can think of, to practise parts of the aural without a competant pianist to help out, as it's impossible to play yourself a sequence of chords/cadence/modulation to guess.
Sight singing is easy to practise on your own if you have a hymn book or anything similar.
Test D just requires you to listen to lots of music to get a feel for the different periods and a bit of sort of musical general knowledge.
The only thing you can't do on your own is the singing back bit, but I think the test on hofnote for that is ok. If you don't look at the score while it's playing, then try singing it back, then compare it to what it's actually meant to sound like by playing from the music or replaying the thing.