Thoughts on the pawmasher: iPeng (control app for Squeezebox) uses the following symbols for different additions to the queue (like the pawmasher):
But it also has the concept of a playback mode and has an icon in its status bar to let you know what mode you are in, so in the following mode, you are going to whack your queue and play what you have selected straightaway:
And in this mode, you are going to insert your selection after the currently playing track:
Etc.
Does it make sense to support all of the different pawmasher “modes”, with the default mode to bring up the pawmasher screen itself?
BTW, you click on the “mode” icon to change it.