Respected Sir............ My name is prabhu working in one of the software company in india. when i was trying to use arecord and aplay command in my console(fedora-2.6.11-1.1369_FC4) i am getting following report.... So please kindly describe me for solve this problem...i am newbie in linux... [root@localhost cards]# arecord ALSA lib conf.c:1578:(snd_config_load1) _toplevel_:56:23:No such file or directory ALSA lib conf.c:2821:(snd_config_hook_load) /etc/alsa/cards/aliases.conf may be old or corrupted: consider to remove or fix it ALSA lib conf.c:2684:(snd_config_hooks_call) function snd_config_hook_load returned error: No such file or directory ALSA lib pcm.c:1959:(snd_pcm_open_conf) Invalid type for PCM default definition (id: default, value: cards.pcm.default) arecord: main:564: audio open error: Invalid argument [root@localhost cards]# Thanks &b Regards Prabhu P