You can use a lightweight https://github.com/gandro/input-event-daemon, it should listen on /dev/input/event4 for LID:0 and LID:1 events.

To get maximum of the unaccelerated framebuffer driver you can use mplayer2 (it uses libraries with SMP support) and this ~/.mplayer/config

ao=alsa
mixer-channel=Master
vo=x11
zoom=1
sws=0
hardframedrop=1
lavdopts=fast=1:skiploopfilter=all

#!/bin/sh
cookies_file=`mktemp /tmp/youtube-cookies.XXXXXX`
rm $cookies_file
url="`youtube-dl --cookies=$cookies_file -g --max-quality 35 $1`"
mplayer -cookies -cookies-file $cookies_file -cache 2048 $url
rm $cookies_file

To be able to hear simultaneous playback from different programs copy this to /usr/share/alsa/cards/tegra-alc5632.conf:

# default with dmix/dsnoop
tegra-alc5632.pcm.default {
	@args [ CARD ]
	@args.CARD {
		type string
	}
	type asym
	playback.pcm {
		type plug
		slave.pcm {
			@func concat
			strings [ "dmix:CARD=" $CARD ",RATE=44100" ]
		}
	}
	capture.pcm {
		type plug
		slave.pcm {
			@func concat
			strings [ "dsnoop:CARD=" $CARD ",RATE=44100" ]
		}
	}
}

Add this to ~/.asoundrc:

pcm.softvol {
        @args [ NAME ]
        @args.NAME.type string
        type softvol
        slave.pcm "default"
        control.name $NAME
}

And use softvol:<custom name> for the ALSA device, like this: aplay -Dsoftvol:“Aplay Dedicated” testmusic.wav

You can use xkbevd to play an arbitrary sound when an XkbBell event is generated. For URvxt you need to tell it to use xkbbell for bellCommand. A better solution would be to extend input-events-daemon to create a virtual input device capable of receiving a system bell, that way it'd work equally well for all programs even without X.

• compat-wireless provides newer wireless drivers that work better but wireless extensions will not be enabled until the kernel is compiled with support for some old pre-mac80211 driver (to select CONFIG_WIRELESS_EXT).
• iw dev wlan0 set power_save off to improve interactivity when a power-saving compatible AP is used