Even though I'm not really completely satisfied by any of the currently available Maemo music players, this is IMO one of the better options currently available.
Pros: - Stable; I don't remember any crashes so far - Maemoscrobbler support is a very nice feature - The kinetic scolling both looks and works nice
- Battery gets drained in a couple of days if I leave this running (even on background). However, to be fair, I think this is caused by a SDL feature/bug instead of a Kagu bug, see: http://bugzilla.libsdl.org/show_bug.cgi?id=323
- The playlist management (adding/removing/rearranging songs in the list) is a bit clumsy and basic at the moment