Ogle works but without sound

Hi

I've got ogle-0.9.1, ALSA without OSS on an 2.6.6-kernel (gentoo2004.1).

However, Ogle never produces sound. The error Message is:

WARNING[ogle_mpeg_vs]: B-frame before forward ref frame
Xscreensaver not running.
No accelerated colorspace coversion found
No accelerated IMDCT transform found
ERROR[ogle_audio]: odelay failed, falling back to clock sync
WARNING[ogle_mpeg_vs]: B-frame before forward ref frame

Of course, I visited your FAQ-page and emerged the gui as well; but this 
workarround does not work either.

Thank you for your help.

KRS