snapper —
Apple audio device driver
snapper* at obio?
audio* at snapper?
The snapper driver provides support for audio hardware
  using the TAS3004 chipset found in many Apple iBooks, PowerBooks, and
  PowerMacs. Other i2s compatible controllers found in Mac Minis, which lack a
  TAS3004, are also supported.
Hardware features:
  - Supports data word lengths of 16 to 24 bits
- Processes sample rates from 32kHz to 48kHz
- Provides digital equalization and compression capabilities
Thesnapper device driver appeared in
  NetBSD 2.0.