rhythmbox / gstreamer plays too fast

[huw read]

I managed to get rhythmbox running using macports to fill in the  
dependancies.Rhythmbox. However when i play a song it does indeed  
play, but is slightly fast. i think its related to this problem: http://www.nabble.com/gstreamer-plays-too-fast-td3838139.html 
  but it doesn't provide a solution that helps me. I guess it may have  
something more to do with gstreamer than rhythmbox in particular.  
Please help! I'm tired of using itunes for my music collection on mac  
osx!