@ cjannack: you're welcome!

Are you trying to load playlists created within the app or from pc? If the second, please send me by email a sample of this playlist. Another user has problem with playlists created from iTunes, but he couldn't find the generated playlist file. I have to manually parse the m3u file, so knowing how it is formatted would help me fixing it.

Folder filtering sorts track by title tag, I may switch it to fileName if this may help you. The only other fileName sorting is album filtering, all others sort by title aswell.

Have you tried the new playlist creation in ColdSilver theme? Long tap on a playlist > Edit: click on songs in the top list to add them in playlist (the bottom list).

Is the illumination in low power screen ok?

I got cpu usages from Nokia Energy Profiler and the pulse process is not even considered, while on top it appears. Anyway, the backend is gstreamer for both QtMultimediaKit and Phonon.