Mobile / FLStudio Groove uses the default audio device. In FLStudio Groove on Win8, it is possible to change this setting in the Windows mixer, if you have more than one sound card and want to send sound somewhere ...
FLStudio ASIO FLStudio ASIO has the advantage of being fully multi-client on most machines. This will allow you to hear the audio from FLStudio and other applications (such as YouTube, SoundCloud etc) at the same time ...