Embeds are being removed from facebook more and more because third parties are having trouble with them.
Youtube/soundcloud are about the same. Often after playing on youtube it will move onto another song later as well. No different from soundcloud.
> so where people can comment without going back and forth between 2 websites. The only place you would get comment in on Facebook in this scenario, (you can't really force the situation though, people can always force the situation to open up the app). Really if you want you song to be popular you need to use Soundcloud, YouTube or both. If you are planning on selling the song might be best to stick to youtube.
Please note "
without going back and forth between 2 websites" you may consider this be simple in your scenario, but that's just how you feel. The people listening to your songs may have different scenarios. For me it's much easier if I go to the actual original website esp when I use my mobile phone etc, it seems to be more reliable. If somebody imposed that limitation on me I'd probably just move on... So consider everybody think different, I suggest you just (mostly) follow the defaults given to you like everybody else in your situation.
Thanks.