I haven't tried this but I was told it this works!
Since I have a mac, I haven't synced my BB to my mac.
I'd like to put music on my BB.
Without synching, I could use a USB card reader with a micro SD plugged into my mac and then I could click and drag files onto the micro SD.
Then I could remove the micro SD and insert into my BB and this would allow me to play my music.
So, if this is the case do I need to format the micro SD first? And do I still have to allow for mass storage onto BB before I insert the micro SD?