I think I can answer #2.
I've played around abit lately with the audio and player functions in
pyglet, and yes you can load sounds into a player before hand to play as
you want.
player = pyglet.media.Player()
sound = pyglet.resource.media('sound.wav',streaming=False)
player.queue(sound)
player.play()
When you play a sound source it also return's a player class, which you an
also treat as a regular player:
sound = pyglet.resource.media('sound.wav')
player = sound.play()
player.queue(sound)
player.play()
The problem however is that re-loading each sound into the queue can cause
a noticable delay in playback as its loaded into the audio buffer. Another
problem is that once the sound is done playing, its removed from the
queue/buffer, and if you try pre-loading them you also get a noticable
delay in when the sounds are played. You could try seeking back to the
beginning of a sound before it finished playing, but that can also
potentially cause distorsions on playback.
There are a few ways the Player can handle the end of a sound as well with
the eos_action variable, such as Pausing when a sound finishes, Next to
play the next sound in the queue automatically, and Loop, which will play
the sound over and over again forever when you hit play only once.
I've been thinking lately about taking a closer look at the Player class
and trying to add a new eos_action function like "replay", which would
return to the start of the sound and pause the player, and wait for the
next time *.play() is called so you don't have to keep generating new
Players everytime.
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