The play back in (insert program name here) is moot. You can associate any file to open in any program. In your case your default application for MP3 was Windows Media Player. (For me it is VLC. For the next guy it may be Real Player. Etc...)

Your error message was more likely about a wrong CODEC being used. You can fix that by downloading the K-lite CODEC package.

Either way, nothing you said would have anything to do with BB or RB. Still points to a Windows error.