When I modifed USE to USE="-X -gnome -kde -gtk" ,
I finally successed in installing mplayer without graphical
desktop. But I got another problem.
 
# mplayer  christmas\ in\ my\ heart.mp3
 
It printed some error messages though mplayer could played mp3 file
without sound.
 
Error Message:
[AO_ALSA] alsa-lib: confmisc.c:768:(parse_card) cannot find card '0'
[AO_ALSA] alsa-lib: conf.c:4184:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:392:(snd_func_concat) error evaluating strings
[AO_ALSA] alsa-lib: conf.c:4184:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:1251:(snd_func_refer) error evaluating name
[AO_ALSA] alsa-lib: conf.c:4184:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
[AO_ALSA] alsa-lib: conf.c:4663:(snd_config_expand) Evaluate error: No such file or directory
[AO_ALSA] alsa-lib: pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM default
[AO_ALSA] Playback open error: No such file or directory
[AO SDL] Samplerate: 44100Hz Channels: Stereo Format s16le
[AO_ALSA] alsa-lib: confmisc.c:768:(parse_card) cannot find card '0'
[AO_ALSA] alsa-lib: conf.c:4184:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:392:(snd_func_concat) error evaluating strings
[AO_ALSA] alsa-lib: conf.c:4184:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
[AO_ALSA] alsa-lib: confmisc.c:1251:(snd_func_refer) error evaluating name
[AO_ALSA] alsa-lib: conf.c:4184:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
[AO_ALSA] alsa-lib: conf.c:4663:(snd_config_expand)
Evaluate error: No such file or directory
[AO_ALSA] alsa-lib: pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM default
[AO SDL] Unable to open audio: No available audio device
DVB card number must be between 1 and 4
AO: [null] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
 
The sound card driver I have built into kernel . When I used lspci,
I can see that "hda_intel" is the driver for sound card.
So what's wrong with it ?