Defines in src/sd-alsa

• DEFAULT_SOUND_BITS src/sd-alsa/sound.h:37
• DEFAULT_SOUND_FREQ src/sd-alsa/sound.h:38
• DEFAULT_SOUND_MAXB src/sd-alsa/sound.h:35
• DEFAULT_SOUND_MINB src/sd-alsa/sound.h:36
• HAVE_STEREO_SUPPORT src/sd-alsa/sound.h:39
• SOUND16_BASE_VAL src/sd-alsa/sound.h:32
• SOUND8_BASE_VAL src/sd-alsa/sound.h:33