per my usual fashion, I will let you use Google to find free trial versions...

using Winrar you can compress your files and password protect them...

the compress .rar file can then be shared and you can call your brother up and tell him the password needed to open it...if you choose a complex password, then the odds of '********' it are pretty low..hint: do NOT use a word in the dictionary!

as far as cheap download sites for music, wouldn't have a clue..and I would refuse to advise one as that is basically spamming/advertising for a for profit service, which this forum does not condone...