It is not possible with Ratoc CFU1U because its very low data transfer rate.
I made some measurements with my CFU1U and I agree with speeds published at
Ratoc CFU1U FAQ (take the best ones in the table = 0.24MB/s).
Since 3 days ago it is available the new Ratoc model CFU2 but
its FAQ says same speeds like previuos model (254KB/s = 0.254MB/s).
I have no idea about SolarExpress data speed but at Ratoc CFU2 FAQ there is a very important information: the limitation is at PDA side because CFU2 is able to handle 4 times more (1MB/s).
That data transfer rate is right on the limit for playing back a "standard length" - "CD size" movie. A 100min movie in 700MB CD requires an averaged transfer of 0.116MB/s. Compressed data flow is not constant, what I experienced it is at the limit. Including in that situation, when background music appears in the movie (then data transfer increases) it sometimes stops for a while for buffer refilling.
Sorry, it is hardly possible playing back a CD quality movie through USB host post, IMPOSSIBLE a DVD quality movie.