The mute button should turn orange when pressed and then stay orange when the sound is muted. It should then go back normal when unmuted.
If you''re talking about it not highlighting when the mouse is hovering over it then this is right. As I'm using a touchscreen only system so I didn't add any ON (hover highlights) to my skin as they were unessessary (you wouldn't see them as the button would be pressed before you it would appear).
It's working for me but I will look into it. Which screen is it not working on (e.g. the menu screen or the audio player etc.)?
The visu is embedded into the skin. Double tapping it should make it full screen however this depends on your WinAmp visualisation settings. For me, my carPC wouldn't run it in full screen mode and when using "fake full screen" mode (see Winamp settings) RoadRunner just re-embeds it.
If you want to make it bigger yourself you can edit the audioplayer.skin file with the RR SkinEditor and increase the size of it. However, any bigger it won't look as nice (IMO) and you will lose the buttons that control the music.
Hope this helps!