Audacious warning "broken GTK engine usage warning".

[tptbz]

Audacious works. But, when I start it a warning window pops up:
Audacious has detected that you're using a broken GTK engine.
The theme engine you are using, QT, is incompatible with some of the features used by modern skins. The incompatible features have been disabled for this session. To use these features, please consider using a different GTK theme engine.

I'd like to know if anyone know what that means. Thank you.

[ihatethetv]

Just ran into this myself, any news on this?

Should I upgrade gtk or something?

Thx,
G

[bimaljr]

I have also same problem... and more.. I cannot play any MP3 file.
I am also using Kubuntu 8.04

Edit : Now I can play any MP3 file, it's a plugin problem.

[paxmark1]

bump