MTP devices don't play nice with Amarok

Subsequent to my earlier post, I have come to know that MTP devices don't play very nice with Amarok. One of the main drawbacks is that one cannot play a track directly from the device. Instead he has to copy it to the collections db to play it. So that means I cannot preview the song before copying it to my main collection.
The reason for this is that the internal url for those tracks are kept as file://. and since technically it is not mounted on the root folder, amarok cannot find it at that location. Instead it should store something like mtp://., so that when amarok asks for it a proper handler for mtp:// can read the track and send it to amarok to play. See the discussion at http://amarok.kde.org/forum/index.php/topic,13614.0.html