If you have a sound card that supports a CD-ROM or SCSI interface, the Linux SCSI HOWTO and the Linux CD-ROM HOWTO have additional information that may be useful to you.
Hannu Savolainen has written a draft version of the Hacker's Guide to VoxWare. The latest version is draft 2, and can be found on ftp://nic.funet.fi/pub/OS/Linux/ALPHA/sound/.
The following FAQs are regularly posted to the usenet newsgroup news.announce as well as being archived at ftp://rtfm.mit.edu/pub/usenet/news.answers:
The FAQs also list several product specific mailing lists and archive sites. The following Usenet news groups discuss sound and/or music related issues:
A Web site dedicated to multimedia can be found at http://viswiz.gmd.de/MultimediaInfo/. Creative Labs has a Web site at http://www.creaf.com/. MediaTrix has a Web site at http://www.mediatrix.com/.
The Linux mailing list has a number of "channels" dedicated to different topics, including sound. To find out how to join, send a mail message with the word "help" as the message body to majordomo@vger.rutgers.edu.
As mentioned several times before, the kernel sound driver includes a
number of Readme files containing useful information about
the sound card driver. These can typically be found in the directory
/usr/src/linux/drivers/sound.
The author of the kernel sound driver, Hannu Savolainen, can be contacted by email at hannu@voxware.pp.fi. He also has a World-Wide Web site at http://personal.eunet.fi/pp/voxware.
The Linux Software Map (LSM) is an invaluable reference for locating Linux software. Searching the LSM for keywords such as sound is a good way to identify applications related to sound hardware. The LSM can be found on various anonymous FTP sites, including ftp://sunsite.unc.edu/pub/Linux/docs/LSM.gz.
The Linux Documentation Project has produced several books on Linux, including Linux Installation and Getting Started. These are freely available by anonymous FTP from major Linux archive sites or can be purchased in hardcopy format.