Locale Music Plugin is a plugin for the Locale Android app that plays any song, audio file, or playlist in the default music app. You can get it from the Android app store.

If there’s no available music app, it uses the built in Android media player. Playlists are only supported on some devices.

The app is open source and released into the public domain. Download the code.

For more, see my blog post Thoughts on writing my first Android app.