/cd download

[Vovacr]

How to download a song from a link?
I have already tried many links, but I get the following
Which links should be inserted exactly?

[Athar42]

The URL argument must be the file, with a correct extension (so, .MP3 ; .WAV or .FLAC).
Website like spotify will not give you an MP3 file output this way, not that I'm aware of.

Edit : Also, the second parameter (the one with "test.mp3", you can try without the double quote, so just : test.mp3)
Who knows, maybe that will work just like that (I never tried with Spotify :D )

New edit with CD v3 : You can download without the "double quote", but when I tried it, it download the web page, not the song, so my guess : will not work unless you can grab a direct access to the stored audio file, which might not exist (they stream the music, they never display a direct link)