Comment 3 for bug 136604

I wouldn't say it is 'hard' merely 'difficult' technically in the sense that the function would be best implemented in the DAAP plug-in that needs it, rather than all of Rhythmbox, and experience shows that the kind of knowledge needed for that kind of integration isn't usually present in the people coding the plug-ins. Getting it implemented there might be 'harder' (time and priorities) than a more direct work-around locally.

I agree it would be a good feature to have based on your use-case, and if you can implement it, it'd be a good lesson for everyone developing user-friendly applications at all levels.