that's right , during the instalation , the idea is that the players are playing deconstructing sounds with out any "skin" on it the md player need to work and play a disc in random option , the sound is on phones ( like for cd and DAT ),( and build-in speakers for reels , tape , minitape [really funny format , the smaller one °!°) , and turnetable with the numark portable !!! are you a dj in travel ? ---> http://www.thomann.de/fr/numark_pt01_tragb...ttenspieler.htm ) i am really interinsting about any feedback on this topic , yes but, the problem is that the display is on the front cover and should makes problems: well , i am looking on players have no display on the top and maybe should play in this state as: MZ e-90 MZ-E25 or this kind of , maybe older , one could play after a surgical operation is someone a surgeon? ThX °!° ian