First problem:

iTunes Radio will not play any of my stations on my MacBook. On my Mac mini, iTunes Radio tends to stop playing, and doesn't play the next track.

Second problem:

I recorded a screen capture and I'd like to drop in text into the video in iMovie 2013. The problem is that the Content Library isn't available. (The video is about 15 seconds long, detailing some instructions for a friend of mine).

- is Content Library not available for short videos and/or screen cap videos?