How to be more precise in volume?

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http://forum.xda-developers.com – Just before going to sleep, i take my tablet to play some relaxing game and listen my music from shoutcast. But the problem is in the volume level. What i mean is, if i start from mute,, and i just press one time the volume+, the sound is too loud, my wife want to sleep. I know i can plug headphone, but not in my bed. So, how can i ajust more precise the volume to be less loud when passkng from mute to 1? Hope you will understand my question! (HowTos)