You can download a whole bunch of Fela Kuti's music (and Seun's new album) from eMusic
for around a 25 cents a track with monthly subscription (or free during a trial period). Most of the tracks are quite long (often only two per LP), which makes it an even better deal.
Their selection now is different from when i downloaded around twenty last year, so i don't know how good the current selections are. For that matter, i'm not fully sure how good the tracks i do have are, but Roforofo Fight
is very pleasing to me. However, i don't remotely understand any of the lyrics nor what it means ("a Roforofo fight" either being a mud-slinging contest or, possibly, a springtime mating ritual of the orange-tufted sunbird).
It's probably best for my enjoyment that i don't the understand any of the lyrics, because Fela Kuti was a tremendous misogynist. I'm a little more okay with his songs against military dictatorships.
I'd be interested in other recommendations for Afrobeat music. I like Konono No.1 a bit more than either Fela or Femi Kuti. I can't think of any other Afrobeat that i've particularly enjoyed.