Hello reidh, sorry to tell you that if it requires Flash,
TenFourFox won't be able to play it.* HTML5 services, like YouTube,
will work, and will work better as HTML5 coverage is improved, but
for Flash you'll have to use Safari, Camino, OmniWeb or Opera.
These browsers aren't developed any further for the PPC, meaning
that more recent HMTL and CSS features will work in TenFourFox
only, that's what we mean by "continued support". There's no
technical way to do this, and bring you Flash as well, so you'll
have to rely on older browsers for Flash.
*You may be able to download some stuff and play it offline,