NetBSSD audio - I want my mp3 !

[Paul Goyette <paul%whooppee.com@localhost>]

OK, I'm lost.  My brain can't seem to wrap itself around all of the
pieces...

My hardware is pretty standard, just an ASUS "STRIX" motherboard and
a sound bar with USB power and stereo jack connected to Line-Out.

As near as I can tell, all of the various devices exist and are
accessible.

Here are the various settings I can find (and thanks to martin@ for
helping to identify them).

# audiocfg list
0: [*] audio0 @ hdafg0: NVIDIA product 0051
       playback: 16, 2ch, 48000Hz
       record:   16, 2ch, 48000Hz
       (P-) slinear_le 16/16, 2ch, { 48000 }
       (P-) slinear_le 16/16, 4ch, { 48000 }
       (P-) slinear_le 16/16, 6ch, { 48000 }
       (P-) slinear_le 16/16, 8ch, { 48000 }
       (PR) slinear_le 16/16, 2ch, 48000-48000Hz

dmesg shows

[    11.134747] hdaudio0 at pci1 dev 0 function 1: HD Audio Controller
[    11.134747] hdaudio0: interrupting at msi13 vec 0
[    11.138653] hdaudio0: HDA ver. 1.0, OSS 4, ISS 4, BSS 0, SDO 4, 64-bit
[    11.146465] hdafg0 at hdaudio0: NVIDIA product 0051
[    11.154332] hdafg0: DP00 8ch: Digital Out [Jack]
[    11.154332] hdafg0: DP01 8ch: Digital Out [Jack]
[    11.158218] hdafg0: 8ch/0ch 48000Hz PCM16*
[    11.177715] audio0 at hdafg0: playback, capture, full duplex, independent
[    11.181622] audio0: slinear_le:16 2ch 48000Hz, blk 1920 bytes (10ms) for playback
[    11.181622] audio0: slinear_le:16 2ch 48000Hz, blk 1920 bytes (10ms) for recording

(There's also a hdaudio1 for the display/monitor, but not expected
to work since there are no embedded speakers.)

+ mixerctl -av
outputs.dacsel=DP00,DP01  { DP00 DP01 }

Anyone got a clue on how I can make some sounds here?  :-)

SIDEBAR: Most of my music is in Apple iTunes's mp4 format *.m4a (and
a few *.m4p where the protection never got removed).  Anyone have a
recomendation on what tool I could use to process these mp4's ?

+---------------------+--------------------------+----------------------+
| Paul Goyette (.sig) | PGP Key fingerprint:     | E-mail addresses:    |
| (Retired)           | 1B11 1849 721C 56C8 F63A | paul%whooppee.com@localhost    |
| Software Developer  | 6E2E 05FD 15CE 9F2D 5102 | pgoyette%netbsd.org@localhost  |
| & Network Engineer  |                          | pgoyette99%gmail.com@localhost |
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