Today I have used some time to observe and write a bit about some usabilty problems I have found in the music player Rhythmbox.
Everything I have written in my PDF is from my point of view – but I have tried to argument with links to the GNOME Human Interface Guidelines.
I really hope that you can see what I mean and support me in this 
If some of the developers see this blogpost I hope that you will take this into consideration – and eventually give me a comment about why you do as you do
Thanks!
Great writing!
Please add to it:
Repeat & Shuffle – similar to Play/Pause, it’s not clear what will they do (start or stop shuffling) and what the current state is. Suggestion: show buttons pressed when on.
Please submit a bug to Rhythmbox, attaching your suggestions and one above.
Thanks!