CD播放机不能播放CD，而用播放DVD、VCD的程序播放CD却可以。为何？

cioworld

如题。系统完全安装，用alsaconf配置好声卡，想先放个CD庆祝一下，就出现这问题。:confused:

[root@cio root]# lspci
00:00.0 Host bridge: Intel Corp. 82815 815 Chipset Host Bridge and Memory Controller Hub (rev 02)
00:01.0 PCI bridge: Intel Corp. 82815 815 Chipset AGP Bridge (rev 02)
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB PCI Bridge (rev 01)
00:1f.0 ISA bridge: Intel Corp. 82801BA ISA Bridge (LPC) (rev 01)
00:1f.1 IDE interface: Intel Corp. 82801BA IDE U100 (rev 01)
00:1f.2 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #1) (rev 01)
00:1f.3 SMBus: Intel Corp. 82801BA/BAM SMBus (rev 01)
00:1f.4 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #2) (rev 01)
01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev a1)
02:05.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 07)
02:07.0 Ethernet controller: 3Com Corporation 3c905 100BaseTX [Boomerang]
02:0c.0 Ethernet controller: VIA Technologies, Inc. VT6105 [Rhine-III] (rev 86)
[root@cio root]#