Firefox 27 wont play Bandcamp and Soundcloud
indeed, without flash i tried but doesnt work https://trisquel.info/en/forum/bandcamp-wont-play-abrowser its weird 'cause in abrowser 27 works perfectly i dont have installed noscript or any plugin such that only ABP and https everywere.
Looks it could be due to some HTML5 problems in Firefox. If you go to this page
"Sorry, but unfortunately, your browser does not support HTML5 audio in the format we need. Maybe someday it will, or we'll add more supported formats, or something else will happen"
Sorry for my poor english.
Go to about:config and set media.gstreamer.enabled to true. You might also need to get some gstreamer codecs.
Soundcloud requires nonfree obfuscated javascript.
I recommend https://github.com/lukapusic/soundcloud-dl/
I've found that Midori and Epiphany both play Soundcloud. Both installed straight from the repos.