Hello Starpilots!
The Complete Music Set Bundle for the first Flatspace game is live today. As with any bundle on Steam, you only pay for what you don't own, and here you can buy all of the three current Flatspace Music Packs with a 33% discount.
Find it here:
https://store.steampowered.com/bundle/41403/Flatspace_Complete_Music_Set/
Flatspace IIk has a similar bundle here:
https://store.steampowered.com/bundle/38165/Flatspace_IIk_Complete_Music_Pack_Set/
More Bundles of different things, and perhaps more music will be coming up at some point.
Happy Flying,
Mark