I foresee the tech behind this expanding to include more audio responses throughout the game, more interaction, NPC voices perhaps and things like that. I really like it actually, adds a lot to my experience, but there is only so much news to go around.
Galnet Audio Channel control would be great. Allow switching modes from in-game News, to external News, to in-game music, to personal music, to radio/streams, and reuse the same basic player controls.
For personal music, a folder location can be chosen (say in the game menu). Ability for playlists or categories for your music (such as combat, exploration etc) would be cool too to give some more control. Same thing to save some radio/streams.
Although we can simply play our music externally, it doesn't integrate or mute in sync with game events or audio feedback which I think is the biggest drawback which Galnet Audio could overcome.