Can I preload multiple streams with Exoplayer and play multiple videos at the same time?

Question

We are thinking of using Exoplayer in our application. What I would like to know:

• if you can preload the video streams using Exoplayer and then transfer them to the player?
• Is it possible to play more than one video in a view?
• Is it possible to unhook a player from one type and connect it to another?