http://gplflash.sourceforge.net might work... but I've had little success on Linux/x86 and practically none on Linux/MIPS.

Have you tried using Linux Binary emulation? You should be able to run a Linux/x86 version of Firefox, and use Macromedia's plugin inside that?

(I share your pain though... there are times when Flash is useful on a site, but it's totally useless without a working plugin.)