Here’s a handy way to save individual songs to your phone or tablet with Google Music so that you can listen off-line:
1. Create a playlist called “Keep”
2. On the playlist view hit the push pin icon (pictured right) to set it to be downloaded and saved to your device
3. Add tracks to your new playlist; they will be automatically downloaded
You can also add songs to the playlist from your desktop and they’ll be downloaded by your device automatically; you can remotely install your favourite music!
Joe Halliwell's Blog 