Thanks for the help Saya, ffdshow worked nicely ^_^ Although I've been able to watch the other episodes without problem...hmmm...very strange indeed...
yeah, it's an open ending because the manga is still going...well kinda, it's on hiatus right now (I hate it when manga-ka's do that >_<) but rumor has it Rumiko is going to pick it up again after she finishes Inuyasha...so who knows ^_^
Oh, and I'm going to answer my own question. After a *lot* of searching, and posting on forums asking, I found a soundtrack for both Rumic Theater and Mermaid's Forest, if anyone's interested.
http://store.yahoo.com/animenation/iocd-11045.html*sigh* Figures...it's in the most obvious place, and the last place I think to look....