I agree with first comment. You definitely want to be more specific in the early adopters you're targeting. You mentioned exploring, that is a great word to use and should be part of your headline, something like "Explore the world around you." Your facebook page does a good job of giving examples of what the best use cases are. It will help for you to focus on travels who want to explore the city they are in.
I agree you should have a plan. I think it's important not to avoid doing things outside of your comfort zone because you may miss a lot of opportunities that you couldn't have planned for.
I'm definitely not advocating forcing your friends to support you. I've just found you can tell who your real friends are when they support you without you having to ask twice. They're usually your biggest fans whether or not they try your product.
Any chance you will also link back to Soundcloud? If it's part of your monetization strategy to only link to amazon purchases I get it but what's to stop Soundcloud from turning off the spigot and taking your idea?