Music Beta by Google

Google's new cloud music service is so cool, you need an invitation to use it. But is it right for you as a fitness instructor? If you answer yes to all of these questions, then you should consider trying it out.

1. Do you have a Google account? 
2. Do you have an Android smartphone?
3. Is your music in MP3, AAC, WMA or FLAC file format? Sorry iTunes users... your music is probably in M4P or M4A format.
4. Do you want to create and edit playlists from your computer without having to connect your mp3 player?

Once you sign up, you can upload all of your music to the Google cloud. Then you can access your songs by going to music.google.com or from the Android app on your phone. When you edit playlists from music.google.com, they will automatically synch with your phone.

The best feature of the Android app is that you can choose to make a playlist available offline. This will cache the playlist on your device so that you can keep your phone in airplane mode while you're teaching.