The as200 or AlphaStation200 is based around a 233Mhz alpha processor. Many of these have been sold lately through both onsale.com and webauction.com. They are a good machine to start with and can be picked up fairly cheaply

Installation Instructions
• AS200-4/233 from comp.os.linux.alpha
• AlphaStation 200 from the LUG at City College in San Francisco
• Installing on an as200 with SRM from B. James Phillippe
• Mark Lachniet's directions for an AlphaStation200
• AS200 install directions and update info from Brendan
• Alpha Station 200 4/233 Linux Install Page
• Information on updating SRM on the as200

#
# Sound
#
CONFIG_SOUND=m
CONFIG_SOUND_OSS=m
CONFIG_SOUND_ADLIB=m
CONFIG_SOUND_MSS=m
CONFIG_SOUND_YM3812=m

And use this for your /etc/modules.conf:

# Sound
alias		char-major-14		ad1848
options		ad1848			io=0x530 irq=9 dma=0 dma2=1
pre-install 	ad1848			modprobe -k adlib_card
post-install    ad1848			aumix -f /etc/aumixrc -L > /dev/null
options		adlib_card		io=0x388