If you want legitimate copies, you can just buy them off of Amazon. Each movie is on it's own disc, such as Bender's Game. You can get the single discs for all the movies or get the full collection (which is probably a better value).

http://www.amazon.com/dp/B00F77MAC2/ref=gb1h_tit_c-2_0062_8fd60276?smid=ATVPDKIKX0DER&pf_rd_m=ATVPDKIKX0DER&pf_rd_t=701&pf_rd_s=center-new-2&pf_rd_r=1DAS92SBKC43R4VVR5E6&pf_rd_i=20&pf_rd_p=2055170062

It's a deal of the day.

This was the one I got,, unfortunately it appears to not be available anymore