The best part about upgrading to ios5 today was that I can now seamlessly listen to my tunes stored on my macbook pro through the native music app. I have an iphone that I store music on and the ipad is mostly used around the house and is only 16GB so this was a welcome addition. To set it up click "sharing" on the left panel in itunes(you may need to first enable sharing in itunes preferences). Then setting up a home share is just your itunes user id/password, takes about half a minute for it to set up after you enter. Then on your device just go to settings->music-> and enter your user/pass under "Home Sharing". You can access your shared library on your ipad/iphone in the music app under "more"->"shared".