I've got one song I purchased from itunes and 3 custom sounds. They are all working.
2 of my sounds were encoded with Itunes 7.4.1.2 and would not play.
I updated my itunes to 7.4.3.1 and now they all work. Dunno it it was the encoding or a fluke, but they all work now. Here's my plist.... (the first one was a purchase via itunes)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Ringtones</key>
<dict>
<key>SCWT.m4r</key>
<dict>
<key>GUID</key><string>C3B1DF42777EDF17</string>
<key>Name</key><string>Bittersweet Symphony</string>
<key>Artist</key><string>The Verve</string>
<key>Album Artist</key><string>The Verve</string>
<key>Album</key><string>This Is Music: The Singles, 92-98</string>
<key>Genre</key><string>Alternative</string>
<key>Sort Artist</key><string>Verve</string>
<key>Sort Album Artist</key><string>Verve</string>
<key>Total Time</key><integer>30535</integer>
</dict>
<key>cra.m4a</key>
<dict>
<key>GUID</key><string>00000000002</string>
<key>Name</key><string>Crank</string>
<key>Total Time</key><integer>7354</integer>
</dict>
<key>crankspoof.m4r</key>
<dict>
<key>GUID</key><string>00000000002</string>
<key>Name</key><string>Crank</string>
<key>Total Time</key><integer>7354</integer>
</dict>
<key>cturing.m4a</key>
<dict>
<key>GUID</key><string>00000000003</string>
<key>Name</key><string>CTU</string>
<key>Total Time</key><integer>1933</integer>
</dict>
<key>spoof.m4r</key>
<dict>
<key>GUID</key><string>00000000003</string>
<key>Name</key><string>CTU</string>
<key>Total Time</key><integer>1933</integer>
</dict>
<key>cell.m4a</key>
<dict>
<key>GUID</key><string>00000000004</string>
<key>Name</key><string>Cell</string>
<key>Total Time</key><integer>17136</integer>
</dict>
<key>cellspoof.m4r</key>
<dict>
<key>GUID</key><string>00000000004</string>
<key>Name</key><string>Cell</string>
<key>Total Time</key><integer>17136</integer>
</dict>
</dict>
</dict>
</plist>