Speaker break-in tips..

Volume level and recommended music. For my M20s I used my tuner when (on a jazz station) I wasn't home and played what I wanted to listen to when home. Would I be better off playing a cd when I'm not around, something dynamic like the soundtrack to Gladiator or the like? Maybe you can suggest a paricular piece of music? As far a volume goes: moderate (not ear bleeding levels, of course) is usually the best, but I was wondering if I kept my system playing through the night, at a low volume; would that be cool? My new Harmonic Precision, Caravelles should be here hopefully, in a couple of days. Thanks in advance.
peace, warren