Drag the links below to your bookmarks toolbar, then click them while on an appropriate page to generate a code for embedding on the streetlamps forum
For bandcamp, works for both albums and single tracks
For Soundcloud, should work both on their own pages (single tracks), and embeds on other sites (including "exclusive" streams). Almost certainly won't work with playlists. Post on the forum if you find somewhere it doesn't work and I'll maybe see what I can do.
For YouTube. One of the easiest places to get the code, but I figure you guys are lazy