Sorry, but you'll need to provide a bit more details...for instance, is the audio file you receive of a format that is compatible with the BB Media Player? You may need to check your BB user guide to find out.
Further - Is there an error message presented when you attempt to play the file? If so, what is the complete and exact content of that error message?
Thanks and let us know!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.