Two questions about Blackberry 10 OS and media

Hello,

1. How secure is the personal side on BB? Apps like BBM etc?

2. Music - when an sd card is formatted and then inserted, does the default music player automatically link that all the music in on the card? Is there a better music app than the default? Also, is there an podcast app that syncs automatically over wi-fi (like Podcasts on iOS devices)?

Thanks again

For music I downloaded the Neutron player, and I really like it. I found I can move songs to the card but not whole concerts.

Not sure about the rest of your questions, I have blind faith that it is all totally secure. Haven't used BBM yet.