被強制預設開啟檔案程式。

你要嘅中文解答GUI版，請笑納

圖片參考：http://imgcld.yimg.com/8/n/HA00015053/o/701007120014513873368020.jpg

如果條Extension list真係好extensive，可以highlight條list，再揿M跳去M字頭嘅Ext度。


翻譯埋gao***最後嗰句：如果都仲唔得，就即係個player問題，你最好再裝過佢啦 (IMO [個人意見]：如果咁霸道就索性剷走罷用啦…)

2010-07-13 09:51:33 補充：
文字版步驟就係：
檔案總管（我的電腦 / 我的文件 / whatever）→工具→資料夾選項→檔案類型→喺條List揀MP3→變更→揀你想用嚟開MP3嘅程式→確定哂即可

You can change it via Window:

Window Explorer -> Tools -> Folder Options -> File Types

In the "Extension" column, find mp3, press "Change".
Then select another player you want -> click OK
Remember to tick the box "Always use tghe selected program to open this kind of file"

If it is still not working, that's the player problem. It would be better to un-install it.