Testing smplayer_0.6.9-1maemo7_armel.deb :

-it is not able to play files on the SD card. I had to make a link to be able to access the mp3 songs on my SD card.
-the GUI is daunting at best
-changed something in the settings and since then it jumps through all the mp3s in a playlist displaying the title shortly without playing the title.
In the title list it marks all titles with a green mark (why?) but it
still does not play.
This is a strange behaviour for smplayer. Did not find a
"Reset to default" button in the options.
-smplayer opens two windows where the main window cannot be selected when the title list is opened. Closing the title list closes smplayer completely.

I was using smplayer and mplayer on the desktop under Linux so I know what it is capable of.

The Maemo5 port seems to be quite strange.

Deleting ~/.mplayer does not solve these problems.
I will deinstall smplayer now. :-(