Getting other audio apps to appear on lock screen (One X)

Can't quite work out if it's a Sense issue or ICS issue but while you're playing music obviously the player controls appear on the lock screen. But if I'm using e.g. Google Listen or j.River Gizmo, nothing appears on the lock screen.

I've come across similar issues before but I never really bothered sorting them out since I didn't really use the Android as a regular music player on the move. Now though I do use Gizmo especially quite often and it's annoying. Is there a master set of transport controls that works for any audio app open that I can display on the One X lockscreen?