I'm not exactly sure when this occurred, but both the opening and ending songs are now available for digital purchase on
Peter Erskine's official website for a dollar each! The ending theme had previously been released on the albulm "Drum Play Along, Vol. 1" under the title of "The Cats," but to my knowledge this is the first and only official release for the opening theme. Sadly, I don't think any of the other tracks from the anime are there, but I haven't gone digging through the rest so I can't say for certain.