We use Nextiva as our phone provider and when we receive emails with voicemail attachments they are wav format. If we attach that wav file to the card it will not play. It attaches fine, but when clicked a generic audio player comes up but all options are greyed out. We end up having to attach the entire email to the card, download the email, then play the attachment through Windows. Am I missing something? We have tried all browsers with the same end result. If there is an integrated player, there must a solution, right? Is there a power up that does this?