Date: Thu, 8 Aug 2013 10:58:49 -0400
From: Paul Davis <paul@linuxaudiosystems.com>
To: len@ovenwerks.net
Cc: Linux Audio Users <linux-audio-user@lists.linuxaudio.org>
Subject: Re: [LAU] alsaplayer error using USB Audio DAC
Message-ID:
<CAFa_cKna20vy2MD=Ty=NBP=cdPn6oD9LPvDsCDT78Pg+8w7Piw@mail.gmail.com>
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On Thu, Aug 8, 2013 at 10:53 AM, Len Ovens <len@ovenwerks.net> wrote:

Generally for trouble shooting I would hit the card directly:

alsaplayer -i hw:1,0 filename.flac

aplay --device=hw:1,0 filename.flac

aplay can't handle anything but straight PCM formats. in addition, using
hw:XXX means that the requested data format MUST match the hardware
capabilities. if you ask for a sample rate or channel count not supported
by the hardware, the device configuration will fail. this is why the
"default" device with ALSA is never hw:XXX but at minimum plughw:XXX (which
can do just about any format conversion necessary).