Music Player Daemon

Your code is broken. 1. It sends the newline twice, which means MPD closes the connection due to a malformed command line. This is what may have caused the transfer to be closed. 2. It uses binary mode for a text connection. 3. It keeps on receiving forever until MPD closes the connection, and this ...

MPD doesn't know if mpc or PHP connects to it, so this can hardly be a difference. I rather think your PHP code is buggy, but I can't tell without seeing it.

What does "handle chapters" mean?

Not quite. If you want to have MP3 files, then you should use LAME, because only LAME adds metadata to the files which allow MPD to do gapless MP3 playback. But that doesn't imply that you must use MP3 for gapless playback. Other codecs are always gapless (Vorbis!), and don't need this kind of metad...

It's a pity that Debian-based distributions (e.g. Ubuntu and Raspbian) ship with outdated and discontinued MPD versions. Their refusal to provide bug fixes to their users creates a lot of sorrow. These distributions need to hear more loud complaints from their users.

Your MPD version is old and unsupported.
But my random guess is that the upgrade broke the NFS client, and now MPD times out while waiting for data from the NFS mount.
If you need further help, first upgrade to a supported version (i.e. 0.21.13 or git master).

Can anyone explain how to use # to escape quote chars in a field? Not at all. mpc never quotes its output. The "#" may be used to quote special characters in the format specification. If you want to quote output values, mpc is the wrong tool for the job. Better write a Python two-liner using a MPD ...

card 0: PCH [HDA Intel PCH], device 0: CX20641 Analog [CX20641 Analog] card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Analog output is "hw:0,0" because it's "device 0" inside "card 0". HDMI output is "hw:0,3" because it's "device 3" inside "card 0". ALSA is truly hard to configure, but once...

So you have two devices: one for analog output (to headphones) and one for HDMI output. Your MPD config uses analog output only; nothing should be on the HDMI output. Stupid question: is the audio volume so low because your laptop's tiny speakers do the output and not your TV? Anyway, I assume Rhyth...

Paste the output of "aplay -l".
After that, paste the output of "cat /proc/asound/card0/pcm0p/sub*/[sh]w_params" while MPD plays (being too silent), and again while a different software plays which has "good" volume.

Try forcing 16 bit output by adding format "*:16:*" .. to the ALSA output section. This reduces quality by discarding a few bits of precision, but I've seen some DACs misinterpret "unusual" bit depths (i.e. not 16 bit), so this may work around such a DAC bug. Note that you chose to use software volu...

If you're writing a Python script, then why are you using mpc and not one of the MPD client libraries for Python? That would save a good amount of overhead. Now about the queue thing vs "just play": unlike mpg321, MPD isn't a "one-shot" player. The idea is that you put all the songs you wish MPD to ...

You're looking at the MPD 0.22 documentation, but you're actually using MPD 0.21.

Implementing Enable/Disable is optional. If you don't know a reason to implement them, don't. For now, Open/Play/Close are important. Play shall block until at least one frame has been consumed (or until an error occurs). Delay is optional as well; it can be implemented if you know that the next Pla...

You should write a new output plugin, implementing the C++ interface "AudioOutput". That interface is documented. If you need more help than the existing documentation, ask.

I don't see a "device" setting in your config.

There are many output plugins, and some of them are pretty complex (e.g. ALSA), and some are simpler but less featureful.
If you need any help, just ask.

What does "alsa is not supported" mean? MPD can control any ALSA mixer, just like the "amixer" program. If amixer can control it, then it's "alsa supported".

I have no idea what you're talking about. Is this post auto-generated by a bot?

Don't use MPD to stream your music. Install MPD on the machine that has the speakers. If your music is stored on a different machine, use the "satellite" setup as described in the manual,