First I have to say: nice work. This is one thing I had been missing for some time. Since Marcel got a new build with PVR which also meets requirements of xbmcremote I was able to test.

Two things came up so far:
1. When using last.fm, Last.fm will only provide 3 songs in lineup. I noticed that on screen 2 (the one with play controls and cover) the progress bar starts to move off screen into the 3rd screen. I was thinking this might be due to the updated songlist from last.fm which provides new song lengths, resulting in like "new actual playtime of song 1" divided by "old overall playtime of song 1" being greater 100%?

2. It usually won't show cover art. sometimes it doesn't update current played song at all (both screen 2). Need to check if there is any situation to replicate this.

btw: running 0.6.1