Songbird glitchy with .m4p songs

Ok, so upon downloading 1.0.0rc2, I was delighted to find that Songbird can play my .m4p songs again. But soon after this I discovered that whenever Songbird comes across a .m4p song while playing through a playlist, a window pops up telling me that "The file is encrypted" and "Songbird does not support Decryption" and whatnot.

Here's the good part:
When I click the ok button, Songbird skips over the "encrypted" song and starts playing the next one. But If I click the previous song button, the so called "encyrpted" song starts playing like normal!

anyone else having this problem? (Mac version, Leopard 10.5.5)

EDIT: Actually, it seems to have fixed itself. Strange....