Why now a days the Ping Show download for Zune is not getting played on Windows Phones?

I used to download the Ping wmvs meant for Zune earlier also with no playback problem on Windows Phone.

But with recent shows I am unable to play the shows on Windows Media Player on Windows Phone (OS - Windows Mobile 6).

 

I guess with the inception of Zune HD the shows are getting posted with higher resolution and different compression suited for Zune HD which is not suited for Windows Phone. This is kind on unfair as other file formats posted for these Video downloads are kind of sluggish and heavy with some lagging while playing on Windows Phone and righltly so, but with Zune Video format download? I am surprised.

 

And this is true for any other download on Channel 9 or 10 not just for Ping Show.

 

Any idea on this?