Hi folks, I recently composed music for and worked sound design for a short film that was released under a creative commons license. The film itself was released under that license, however my music & sound were not. Shortly after the films release, a band approached me and asked if they could use my song & the voiceover in their album - to which I agreed. This morning that album was posted online and the band are selling the album with my music a part of it without making an agreement with me over what would happen in terms of profits. On top of that they have given neither myself, nor the original filmmaker any writing credits for our work and even gone so far as to name the album after the film/ song. There was no formal documentation/ releases exchanged or signed in regards to the music. The money I honestly don't care about, I'm more frustrated with the fact that they are passing my work off as their own without so much as a mention of myself or the filmmaker. Is there anything I can do about this, or is it just bad luck on my part? Is it copyright infringement? Any help would be greatly appreciated.