[Android Apps and Games] dbrits:
So I was finally able to launch the server (None of the files were in the right place so I had to change paths, etc.) and connect to it using the app on my Droid Incredible. Spotify Controller was unable to detect the server automatically so I had to specify the server IP manually. After I did that I was connected in a jiff. However, I'm unable to control Spotify from Spotify Controller. All it states is "Nothing is playing..." If I click on "Select song/playlist" both Songs and Playlists are empty. The app states "There are no items..." and I'm under the impression that Playlists should be populated with all of my Spotify playlists and that Songs should list all the songs in my Spotify library.

Anyways, I don't know if this will be of any help, but here's the output when I run spotifycontroller.sh in Terminal:

2011-10-04 22:12:28.803:INFO::Deployment monitor /Applications/SpotifyController/server/webapps at interval 1
2011-10-04 22:12:28.806:INFO::Deployable added: /Applications/SpotifyController/server/webapps/SpotifyControllerServlet.war
2011-10-04 22:12:28.857:INFO::Extract jar:file:/Applications/SpotifyController/server/webapps/SpotifyControllerServlet.war!/ to /private/var/folders/zb/zbitUE7+E2qHl0QMJkvwTU+++TI/-Tmp-/jetty-0.0.0.0-1260-SpotifyControllerServlet.war-_SpotifyControllerServlet-any-/webapp
2011-10-04 22:12:29.279:INFO::started o.e.j.w.WebAppContext{/SpotifyControllerServlet,file:/private/var/folders/zb/zbitUE7+E2qHl0QMJkvwTU+++TI/-Tmp-/jetty-0.0.0.0-1260-SpotifyControllerServlet.war-_SpotifyControllerServlet-any-/webapp/},/Applications/SpotifyController/server/webapps/SpotifyControllerServlet.war
0 [main] INFO com.cewan.spotify.SpotifyControllerServlet - init
52 [main] INFO com.cewan.spotify.ServerThread - found broadcast: 10.37.129.255
52 [main] INFO com.cewan.spotify.ServerThread - found ipString: 10.37.129.2
53 [main] INFO com.cewan.spotify.ServerThread - found broadcast: 10.211.55.255
53 [main] INFO com.cewan.spotify.ServerThread - found ipString: 10.211.55.2
53 [main] INFO com.cewan.spotify.ServerThread - found broadcast: 192.168.0.255
53 [main] INFO com.cewan.spotify.ServerThread - found ipString: 192.168.0.12
2011-10-04 22:12:29.471:INFO::Deployment monitor /Applications/SpotifyController/server/contexts at interval 1
2011-10-04 22:12:29.472:INFO::Deployable added: /Applications/SpotifyController/server/contexts/move-context.xml
2011-10-04 22:12:29.481:INFO::started o.e.j.s.h.MovedContextHandler{/oldContextPath,null}
2011-10-04 22:12:29.482:INFO::Deployable added: /Applications/SpotifyController/server/contexts/resources.xml
2011-10-04 22:12:29.493:INFO::started o.e.j.s.h.ContextHandler{/resources,file:/Applications/SpotifyController/server/resources/}
2011-10-04 22:12:29.523:INFO::Started SelectChannelConnector@0.0.0.0:1260

Any thoughts?

This is pure speculation on my part since I'm (very obviously) unable to run the app successfully on my phone, but if you're not a premium subscriber, the Spotify app (the one made by Spotify) will only allow you to sync your music on a wi-fi network. You can't access their online library. In order to access the Spotify library (play songs, etc.), you need to be a premium subscriber.

It appears that Spotify Controller has a nifty feature that allows you to add music from Spotify through the official Spotify app. My guess is that this feature of Spotify Controller requires that you have access to the Spotify library, and you will only have access to the library through the official app if you're a premium subscriber. Otherwise Spotify Controller is just a remote.