I'm using Rhythmbox that way : 
- I always listen to my automatic playlist «favorites» who plays tracks with best score (score >= 3)
- To help me finding tracks I havn't scored yet and score them (to populate the first list), I've a second automatic playlist defined that way :
   - score equals to 0 (not noted yet)
and
   - last play date not in the last 6 weeks

When I'm listening to a track of the second automatic playlist, I'd like to be able to score tracks while I'm listening to them, but it's not the case : when I give a score to a track, it jumps to next track in the playlist. 
It's not practical since I have to wait for the end of the track to score it. 

Thanks

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