I need to import an mp3 or an ogg file and analyse it through an oscilloscope. Is there any free (as in beer) software to do so? I am aware of xoscope, but in the internet I have only found tutorials that show how to let it work whenever sounds are imported through the micro. I would like to simply "open" a file and start the analysis. Is there anything that does so in a simple and reliable way?
I should think audacity would be able to do this.
EDIT: OK, Well, I'm not up with all of the Audio jargon, so here's a few things I found: http://spek.cc/ and http://www.sonicvisualiser.org/ and I also found this page, which contains many links to different software for Linux: http://linux-sound.org/dsp.html