既然是mplayer的前端，希望键位能和mplayer接近些。
我查了下mplayer的键位，简直是啥都用上了。如果在保留mplayer键位的情况下，
那CMMusic的功能键就只能放在大写上了...
下面是现在的键位，和我新规划的键位，但总觉得新键位怪怪的。
我这里以下方案，大家看是如何：
１.沿用1.4版本的方案，但希望可配置。
２.mplayer控制所有字符，但控制键和大写(上下左右)由CMMusic控制。
３.增加切换按键，一种在mplayer模式下，一种在CMMusic模式下。
mplayer键位表：
RIGHT seek +10
LEFT seek -10
DOWN seek -60
UP seek +60
PGUP seek 600
PGDWN seek -600
m mute
# switch_audio # switch audio streams
+ audio_delay 0.100
- audio_delay -0.100
[ speed_mult 0.9091 # scale playback speed
] speed_mult 1.1
{ speed_mult 0.5
} speed_mult 2.0
BS speed_set 1.0 # reset speed to normal
q quit
ESC quit
ENTER pt_step 1 1 # skip to next file
p pause
. frame_step # advance one frame and pause
SPACE pause
HOME pt_up_step 1
END pt_up_step -1
> pt_step 1 # skip to next file
< pt_step -1 # previous
INS alt_src_step 1
DEL alt_src_step -1
o osd
I osd_show_property_text "${filename}" # display filename in osd
z sub_delay -0.1 # subtract 100 ms delay from subs
x sub_delay +0.1 # add
9 volume -1
/ volume -1
0 volume 1
* volume 1
1 contrast -1
2 contrast 1
3 brightness -1
4 brightness 1
5 hue -1
6 hue 1
7 saturation -1
8 saturation 1
( balance -0.1 # adjust audio balance in favor of left
) balance +0.1 # right
d frame_drop
r sub_pos -1 # move subtitles up
t sub_pos +1 # down
#? sub_step +1 # immediately display next subtitle
#? sub_step -1 # previous
#? sub_scale +0.1 # increase subtitle font size
#? sub_scale -0.1 # decrease subtitle font size
f vo_fullscreen
T vo_ontop # toggle video window ontop of other windows
w panscan -0.1 # zoom out with -panscan 0 -fs
e panscan +0.1 # in
s screenshot # take a png screenshot with -vf screenshot
# S will take a png screenshot of every frame
h tv_step_channel 1
l tv_step_channel -1
n tv_step_norm
b tv_step_chanlist