How to use 'wine' and AviSynth and Avs2YUV with 'mplayer/mencoder' (or any player/encoder)

I have a lot of AviSynth scripts (.avs) which create a montage of text pics and video, but until yesterday I'd had no luck running AviSynth scripts in 'wine'.
I read about a 'Windows' program called Avs2YUV which, according to wineHQ, is platinum and is "intended for use under Wine to interface between Avisynth and Linux-based video tools".

I've had partial success with a couple of very simple scripts, but "partial" means I don't know how to use it properly, or the AviSynth-Avs2YUV combo doesn't work properly (or both).

Below, are 2 scripts:
The first one outputs and saves video only (as intended), but I'd like to know if it is possible to pipe Avs2YUV's stdout directly into a Linux media player... I've tried a few options, but nothing seems to work. On the other hand, the saved .264 file does play, so AviSynth and Avs2YUV are doing something right here. (A quick pre-posting EDIT: I've just corrected a typo where I had put .avi instead of .264, and I realized that I really don't know what x264 does (I'm so used to avi encoding, but I have this feeling that it may be video-only encoder???? ... so I'll mention it now, I have no particular interest in x246.. It was in the example I followed.. I just want to produce a playable video+audio .. the wrapper and codecs aren't particularly important to me.. I'm happy with avi.. actually I prefer it because it works well with AviSynth.. Catch-22...

The second one behaves very much as the first one, but it produces no audio; which it should.

AviSynth scripts are well known, and are directly playable by many players (in Windows), but with this need to use Avs2YUY, I'm somewhat in unknown territory...

I'd appreciate some pointers on these two issues, and perhaps there is an entirely different way to use AviSynth in wine, other than in conjunction with Avs2YUV... or is the idea of using AviSynth in Linux just a myth?

Here are the scripts:

# Script-1: The saved file plays fine (the source has no audio),
#            but how can I play it directly
#
cd $HOME/.wine/drive_c
echo 'version()' > version.avs
wine  avs2yuv.exe  version.avs - \
    | x264 --stdin y4m --output version.264 -
mplayer version.264
#

# Script-2: The saved file has no audio, but it should.
#        ...and like Script-1, how can I play it directly
cd $HOME/.wine/drive_c
echo 'avisource("video.avi")' > video.avs
wine  avs2yuv.exe  video.avs - \
    | x264 --stdin y4m --output video.264 -
mplayer video.264