Yeah, my biggest gripe right now with Evernote is the fact that they treat platforms very differently. For example, in the Windows client (I'm running through WINE), the reminders have yet to appear so my only option is to use the Android client (buggy beta) or Web app to manage them. Kind of stupid IMHO. I suggested elsewhere that Evernote should start focusing more on building the offline web application. However, as there's still a lot of missing functionality, I'll bet it'll be a long time before we see it. With regards to the audio notes in Firefox, install VLC and the VLC broswer p