I have an upcoming project see pic below. I could use some ideas on how best to hinge the doors. The issue I am having is I would prefer if the 3 doors either above or below would flip or slide up/down NOT swing left/right. The reason is to hide some small speakers (left/center/right channel) Its not for an audiophile but would like better sound than typical TV provides but with no grills or visual indicators there is any audio gear behind. When its movie time said fronts would flip or slide up/down. Unit will be all high gloss white with a undetermined wood frame and back.