When going to shows, you still see some groups doing the tired, old practice of handing out free CDs to people in the audience. One way you can stop spending money on duplication, and carrying a bulky CD to shows. Get Dropbox along with their mobile App and send the people you meet your music right on the spot via the App. To do this simply drop your music in a folder on your Dropbox and when you strike up a conversation with someone get their email and share the folder your music is in and they will now be able to download it when they get home. A great way to socialize and make sure people think of your music when they are in front of their computer.