Apple's iTunes DRM has a lot to hate, but first and foremost is that Apple can cheat you by taking away rights that you had when you bought your music. If you bought music from Apple a month ago, you got the right to stream it to anyone on your local network. If you had the hot track that your whole dorm coveted, they could all stream the music from your computer to theirs and give a listen.
But once you install the new iTunes 4.7.1 "update" (more accurate to call it a "downgrade") you lose that ability. Without telling anyone, Apple has stolen some of the rights you paid for when you bought your iTunes music, by adding limits to the number of people you can stream your music to in a 24 hour period. Imagine if your boom-box refused to switch itself on if too many people were in the room — the 21st Century equivalent of gathering in one room to listen to music is gathering on one network to do so, and Apple has just appointed itself the absolute, tyrannical ruler of the size of the social group that you're allowed to stream iTunes music to.
Never mind that the iTunes itself lacks any means of controlling who you stream to only gives you coarse-grained password tools to control who can connect to your streams — unless you wall off your collection with a password, anyone on your LAN can stream and Apple doesn't give you the tools to limit or even see who's streaming, so the stranger three rows over in class might be using up the one session you're saving for your neighbor when you get back to the dorm.
Apple has done this downgrading several times before, taking away rights you paid for, like the right to burn a playlist 10 times (down to seven), the right to stream over the Internet (now jut the right to stream over the LAN) — and Apple's also used its ability to remotely disable features on your iPod and in iTunes to shut out competitors' products, like the Real music player and iPod Download, both of which offered legal functionality to Apple's customers.
Apple has moved to restrict the streaming capability. In the good old days it used to support five simultaneous listeners, but now allows only allows five listeners a day.
