Some WM Software cannot be installed to my X1i

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Tried to installed software to my X1i as backup for my Android phone but found some cannot be installed:

WM 比起Android真是不方便，想設定MP3做鈴聲的話要開啟File Manager, 點住一首mp3不放，然後才有設為鈴聲的選項。MP3檔會被複製到 c:// my documents/ 我的鈴聲，但這樣做就會占到主機的記憶體了。