Can I create a second station without re-uploading all my tracks?

Absolutely!  SAM VIBE was developed from the start to share one music library between multiple stations. Right now you will have to contact support to add additional stations to your media library.  You can run 10, 20 or even 50 stations if you would like to, all from the same music library.  This is a great way to provide background music services for retail outlets, restaurants or bars.