Looks bad, a pretty insult to the Miniplayer. I use my build in speaker at my TFT and put the m6 before the screen, if I want to hear it loud. I guess it sounds better too with build in TFT speakers ! :-)) But for my M6 I ordered this System today:
http://www.teufel.de/de/Multimedia/s_1044.cfm?lcom=14
My colleagues praises this company all over the time. For me the small solution is okay, sound is important, not the chance to dock it into something that looks like my brothers stereo 20years ago.