Quick Time won"t play .wmv and .as files

You need Flip4Mac to play .wmv in Quicktime and it doesn't work on the Intel Macs yet. Download Windows media Player for the Mac from Microsoft.
http://www.microsoft.com/windows/windowsmedia/software/Macintosh/osx/default.asp x

No problem. MPlayer is free for theMac and is also an excellent media player as well as being intel Mac compatible. I think it runs some .wmv but I haven't tried it for that.
http://www.mplayerhq.hu/homepage/design7/dload.html
License

MPlayer is available under the GNU General Public License v2.

Supported Input Formats

(S)VCD (Super Video CD)
CDRwin's .bin image file
DVD, including encrypted DVD
MPEG-1/2 (ES/PS/PES/VOB)
RIFF AVI file format
ASF/WMV/WMA format
QT/MOV/MP4 format
RealAudio/RealVideo format
Ogg/OGM files
Matroska
NUT
NSV (Nullsoft Streaming Video)
VIVO format
FLI format
NuppelVideo format
yuv4mpeg format
FILM (.cpk) format
RoQ format
PVA format
streaming via HTTP/FTP, RTP/RTSP, MMS/MMST, MPST, SDP
TV grabbing
Supported Video and Audio Codecs

most important video codecs:

MPEG-1 (VCD) and MPEG-2 (SVCD/DVD/DVB) video
MPEG-4 in all variants including DivX 😉, OpenDivX (DivX4), DivX 5 (Pro), XviD
Windows Media Video 7/8 (WMV1/2)
Windows Media Video 9 (WMV3) (using x86 DLL)
RealVideo 1.0, 2.0 (G2)
RealVideo 3.0 (RP8), 4.0 (RP9) (using Real libraries)
Sorenson v1/v3 (SVQ1/SVQ3), Cinepak, RPZA and other QuickTime codecs
DV video
3ivx
Intel Indeo3 (3.1, 3.2)
Intel Indeo 4.1 and 5.0 (using x86 DLL or XAnim codecs)
VIVO 1.0, 2.0, I263 and other H.263(+) variants (using x86 DLL)
MJPEG, AVID, VCR2, ASV2 and other hardware formats
FLI/FLC
HuffYUV
various old simple RLE-like formats
most important audio codecs:

MPEG layer 1, 2, and 3 (MP3) audio
AC3/A52 (Dolby Digital) audio (software or SP/DIF)
AAC (MPEG-4 audio)
WMA (DivX Audio) v1, v2
WMA 9 (WMAv3), Voxware audio, ACELP.net etc (using x86 DLLs)
RealAudio: COOK, SIPRO, ATRAC3 (using Real libraries)
RealAudio: DNET and older codecs
QuickTime: Qclp, Q-Design QDMC/QDM2, MACE 3/6 (using QT libraries), ALAC
Ogg Vorbis audio
VIVO audio (g723, Vivo Siren) (using x86 DLL)
alaw/ulaw, (ms)gsm, pcm, *adpcm and other simple old audio formats

I downloaded Flip4Mac, opened it and got this message:
Flip4MAc WMV cannot be installed on this computer,
Quick time version 6.51 or later is required to run Flip4Mac WMV player. I have QuickTime™ Version 7.0.4, Player Version 7.0.4 on a brand new machine.
Is there a fix around this , or is this one of the intel quirks to be worked out.Thanks for any help

2GHz Intel Core Duo Mac OS X (10.4.4) 512MB DDR2 SDRAM

The fix is to wait for the the compatible version or rather use other software, as mentioned in this thread above.

Dual G5/1.8 Mac OS X (10.4.4) 2,25 GB RAM, ATi 9800 XT