OpenSUSE Multimedia :: Can't Mix Multiple Audio Sources When Using S/PDIF?

i'm using optical s/pdif output, called "hda intel, ad198x digital (iec958 (s/pdif) digital audio output)" in phonon preferences. sounds works just fine -- except i can't use multiple audio sources simultaneously: for example amarok+videos is a no-no. only the first audio source plays, so i have to close amarok in order to listen to any flash videos. i had this problem already with opensuse 11.2, but couldn't figure it out (using 11.3 now).

i just recently got a hunch that it might have something to do with mixing and the s/pdif, and i tried using analog output ("hda intel (ad198x analog)"). lo and behold, it works! amarok+flash that isash still doesn't still consider this a major leap forward.however, i'd like to keep using my optical output.