I don't think that the CDs there match my kind of musical taste, but despite that MTV's hijacking the term "leak". For good reasons, maybe. Maybe in order to prevent the spread of this word among music-loving internet users.
Originally meaning, "leaked" releases are mostly promo copies or factory/studio originals of to-be-published-in-the-near-future albums or movies. These illegal albums usually spread with the help of peer-to-peer networks. "Leaks" aren't new, but became popular with the growth of established p2p networks. The main source of "leaks" are generally journalists who (used to) get a promo copy as a cd or dvd, and of course cd/dvd-factory employees and studio personal. This little info is jsut for those who are unfamiliar with this term...
So in my opinion MTV - the leak has nothing to do with "leaked" albums, because: it's not illegal (!), the quality is poor and it has a purpose of giving the record company the possibility to make a market research for whatever reason, to see how many copies should be made, maybe.
And according to MTV...
QUOTE
WHAT IS THE LEAK?
It's a free streaming audio preview of this new release. Just click 'Listen to Entire Album' or a specific song title to start listening.
That's a fukcing lie! 
Well ok, it says "What is
the leak?". But it's intentionally misleading, for sure. :x
Well, what do I think about it, despite the stupid and misleading name? Well, actually I don't care, but I don't care much about MTV in general, so.
Btw, @outscape: It works fine for me, and I'm using media player classic 6.4.6.8 + the realalternative 1.21 suite.