STEP 1: Play the voicemail MP3 on your computer speaker and hold your phone up to it, recording the voicemail greeting.
Step 2: Play your new voicemail message for anyone and everyone.
Of course, there are other ways to do this as well. Depending on your phone and carrier, it's a simple Google search to figure it out. And if you would prefer a different file type, just let us know, we'd be happy to provide it.