I don't know if this is a known issue or not,

It just continues to increase RAM usage until it's killed.

It appears the mods deleted the link to my video. Oh well, pretty much what happened was that when opening a stream in VLC, it all worked fine. But if the m3u association was set to MediaMonkey instead, after opening MM, Tixati would just hang and start eating RAM. At one point I just thought to leave it alone for a while, maybe it'll work again, but then I noticed it was using over 25GB of memory. (i.e. all of my RAM + 9GB of page file)