until today I was using version 2.2.1 (I believe) on my 'live' websites and everything worked fine. Today I updated the plugin to v 2.2.5 and now only the link (http://api.soundcloud.com/tracks/...) is being displayed but not the player itself. I use one wordpress installation that is v 3.4.1 and one that is a little bit older. On both installations v 2.2.5 is behaving as described above.
On my localhost installation the v 2.2.5 is working with an older wordpress installation.
Besides, thanks for making the app, I truly appreciate it.