How Should I name my MP3 Files?

The generally accepted way, is to use Artist - Song Title.mp3

For example:

Bruce Springsteen - Born To Run.mp3

A Day In The Life - The Beatles.mp3

Notice that all words (even short common ones), are capitalized. In most cases, this is the correct way, as that is how they are actually listed on the album/CD liner notes. The exception would be artists who insist on all lower case letters.

Many people reverse that order, so that the song title comes first - that is personal preference, but equally correct.

Some people put a lot of information in the filenames, but this is incorrect, since that information belongs in the file's tag data. Putting too much information in the filename, such as track number, comments, etc., will result in the names being too long, hard to read, and sometimes causes issues with certain software. If the songs are tagged properly when ripped and encoded, there is no need to put that information in the filename. Most software these days ignore the filename (other than as the key for finding the file), and use the tag data to sort, search, etc.

Some software which uses batch mode to do things, such as encode, changing tag information, etc., can only hold xxx number of filenames in their buffer storage, so using basic file naming conventions like above, will allow more files to be processed at a given time, and take up less memory and resources for the computer or device.