I noticed that, there is version of real player on helix community site, for amd 64.
Which can be found here. Well it is a nightly build, but it is there for sometime, so it show how ignorant, I am.
One thing I tested is, the playback is not choppy anymore, and with sound too. Also with alsa support. What sucks, the sound, it so machine like. Need to figure out the right alsa configuration.