Okay, so here's one thing that REALLY grinds my gears about the ready availability of music, or more accurately, how the de-facto mode of promoting an album has become to post snippets of the entire album online.
Because nowadays, more often than not, it has become the case that a band will post all the best bits of the album for free, readily available on the web. This can sometimes be a good thing, but much more frequently, the full album turns out to be those little good bits you can get for free, plus 50 minutes of filler.
This has happened so many times now that I feel rather conned.