I have lots of space music on my site (about 100 tracks) that you are welcome to use as long as you attribute me properly.  :-)

Advanced Pixel Apocalypse is a fun pixelated first person shooter in which you must take up arms and fight against other online players http://www.kizifan.com/action/friv-advanced-pixel-apocalypse-3 In Pixel Gun Apocalypse 3 you can join the Germans or the mercenaries. Battle the other team with a machete and 5 different types of weapons