推荐回答（5个）
1.首先把设置的音乐找到，然后把它上传到百度网盘
2.然后找到需要的那个文件打勾
3.点分享
4.点创建公开连接
5.复制链接
6.然后进这个网站 www.rtkmp3.com
7.把百度网盘复制的连接粘贴到红色箭头所指的地方，再点解析一下，下面出来的地址就是你想设置成空间背景音乐的连接。
8.接下来登陆QQ空间，找到音乐盒——背景音乐——添加网络音乐。
9.点击添加网络音乐后，会出现如下对话框 。然后把刚才的地址链接粘贴到对话框，再填写好歌曲名，歌手名，填写无误后，点击“添加”
10.接下来会提示添加成功，新添加的歌曲就会显示在音乐盒中。
如果只有声音文件 你可以这样：
不管是什么歌，很实用的！
首先把歌曲先传到电脑上 然后 ，进QQ邮箱，进入左下角中转站文件，再进入收藏文件把你想作为背景音的歌曲传上去（点添加收藏）
然后，选择刚刚上传的歌曲
点击下载---直接下载---使用**下载（**指你想电脑上已有的下载软件。QQ旋风可以，迅雷也行）。
这时会得到一个特别长的连接地址，都拷下来，复制其中“？”以前的部分就可以作为链接地址，连接到空间。
不想去掉mp3后面的字符 神马带=号 ……号的 也弄进去 要通过QQ音乐
QQ音乐的面板不是有个+号么(新版的QQ音乐面板上的+号不见了，直接用鼠标右键点播放列表的面板) 点下 再点 添加网络url 复制链接进去 再确定 能放出来的话 就鼠标右键点收藏 收藏到你要的某个列表里 再点开空间进去 找到收藏歌的列表 把它设为背景音乐就行了
希望回答对你有所帮助
找个外链空间 把歌曲传上去 然后外链出来 我用的FileDen.com
1：首先把你设置的音乐找到2：然后把它上传到百度网盘
3：然后找到你上那个文件打勾
4：然后点分享
5：点创建公开连接
6：复制链接
7：然后进这个网站 www.rtkmp3.com
8：把你在百度网盘复制的连接粘贴到红色箭头所指的地方，再点解析一下，下面出来的地址就是你想设置成空间背景音乐的连接。
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