Is there an audio format such that...

[Santa's little helper]

...if a file is in that format then if you do

cat file > audio_device

it will play the sounds in the file ? In other words an audio format
for which you don't need any kind of special programme to play it ;
you just send it as it is to the audio device.

[borromini]

The RAW format I suppose? Not sure though... AFAIK, it should be uncoded data.

[Santa's little helper]

AFAIK, it should be uncoded data.

If by uncoded you mean without headers and such , then of course.
But some coding has to be involved.Sound by definition is an analog
notion.It has amplitude and frequency which can be any number.To
turn these into a sequence of 0's and 1's you need some kind of coding.

[borromini]

I don't know anything about that... To technical for me . AFAIK, the RAW format is a universally usable format, and it's just the raw data (so uncompressed). Don't know if it comes with headers and stuff though. But can't you use Audacity or something similar to convert an mp3 to RAW, and then try to pipe it through your audio device? Or am I thinking too simplistic?

[puntmuts]

I guess you'll need some kind of speed control to avoid the track will be played way too fast. I don't expect this to be possible without a program to control the speed.

[Santa's little helper]

Ok then.I'll experiment with RAW files.Writing a programme
which outputs the file with controled speed is easy.Thank you both for
your comments.