Testing

• Unit tests
• Refactor for easier unit testing

More apps

• Convince app-makers to broadcast intents about their music-playing

Some bigger features

• More "scrobbling destinations" - websites, logfiles, xml, custom-api, etc. to send scrobbles to. This will require a major rewrite/refactoring, unit-tests should probably be written first.

General

• Refactor for cleaner code

This is what I can think of right now.