Obligatory note for those that haven't read/retained the news: Simple Mobile Tools was sold to ZipoApps - an Israeli company that specialises in buying and monetising popular apps.
Fossify is the fork of the Simple Mobile Tools repos, and they're gradually getting through each app and re-releasing them under the new name.
Not necessarily, and I tend to find VLC is still the better media player.
I was sharing more for the interest of those that were using the original Simple Mobile variant, and were waiting for the forked version to be released.
I'll give this one a go. I was on PowerAMP for years ever since I got my first Android phone, a HTC Hero on Android 1.5! Recently I changed to Musicolet. I don't think it's open source, but it is privacy focused, as it doesn't have any features that access a network.