To hopefully get a more specific response in my plea for help, here is the text of the "1950s.m3u" file I created by copying my "1950s" WMP playlist, changing the filename extension to .m3u, and copying the first three lines from a Zune playlist:
<?zpl version="2.0"?><smil>
<
head>
<meta name="generator" content="Zune -- 2.5.447.0" />
<author/>
<title>1950s</title>
</
head>
<body>
<seq>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Mack The Knife - Bobby Darin.mp3" tid="{EB098407-FA39-4A1B-89DB-0C0E1AB3CB3A}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Don't Be Cruel - Elvis Presley.mp3" tid="{93ADB703-2975-4837-A8C0-F801C81E4EA9}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Bye Bye Love - Everly Brothers.mp3" tid="{23AA045D-AF6B-48B8-B9BC-E2B02D070691}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\All I Have To Do Is Dream - Everly Brothers.mp3" tid="{7E436AF6-5EDB-4A62-8615-3A9B92ECA102}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Wake Up Little Susie - Everly Brothers.mp3" tid="{3944A263-FFDC-4836-B810-5125E2AD61A5}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Chances Are - Johnny Mathis.mp3" tid="{7FE81E4E-33C8-4D96-A8B4-B5ACB8633DEF}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Misty - Johnny Mathis.mp3" tid="{1754E347-1AAF-481D-9C88-72B26CC7DFA5}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Smoke Gets In Your Eyes - Platters.mp3" tid="{D9F0DF8A-9C11-4E09-85B8-05C9E31C07C1}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\In The Still Of The Night - Platters.MP3" tid="{0DF855B9-F055-461E-854C-C60751DDFD00}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Twilight Time - Platters.mp3" tid="{44203332-462E-4823-B8FD-CC64DEE362A6}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Only You - Platters.mp3" tid="{65A7E8E8-6403-4ACE-97DE-0537236F49A1}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Sea Of Love - Phil Phillips.mp3" tid="{8C01DDC2-A9A6-4A11-9ADA-3DDAD1A058F4}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\The Great Pretender - Platters.mp3" cid="{C536CB6F-EFCC-4428-A342-5BFD1CA9E7EE}" tid="{473BDB7F-9E57-4AFD-8F51-39CE6E0255B8}"/>
<media src="..\..\..\..\..\Program Files\Kazaa\My Shared Folder\Someone To Watch Over Me - Ella Fitzgerald.mp3" tid="{97F953A2-EB86-488B-9EC5-EC6A3C764962}"/>
</seq>
</body>
</smil>