Soundcloud is the number one audio distribution platform, and a lot of music is on SoundCloud, that isnt on youtube, or is blocked for playback on youtube. Sites like plug.dj integrate soundcloud a long with youtube, so why not transformice?

You can use /soundcloud [SoundCloud Link]
or /nuagesonore [SoundCloud Link]

(because french is obviously fancier!)

I don't think there would be any copyright issues as sites already use it like plug.dj

I would rather see /musique expanded to also accept soundcloud links. Having said that, soundcloud support might be somewhat trickier than youtube thanks to it's design.

Perhaps videos from all sorts of sites would be very well nice.

Support.
Perhaps soundcloud can support /musique instead of making it into a new command. (Like Lemodile said)
Because getting the direct links of mp3 is mad hardd :/

/support

/support
We need this
fuck yt

/support~!

oh wow bumped two times from the dead

but i still support this. would like to see this.