Using compression software such as WinZip or WinRAR shrinks files so they take up less space. This makes zip and rar files ideal for sharing over email or by USB drive. However, some types of files, ...

The original version of WinRAR can both create compressed RAR files and extract them effectively. After installing the software on your computer system, select the folder that you want to compress and ...

RAR is a common compression format that is used to reduce the file size of documents on the Internet. The RAR format supports multipart files, called volumes, that enable you to split a large file ...

I assume that you were compressing MP3s or something similar. The songs have already been compressed once, with the MP3 codec, and they can't be compressed any more without losing data. RAR, of course ...