how to get increased downloading speed while in sharing connection ( in a cyber cafe or library) as it take hours to download even a single song
only wasting money and frustrating
anything can be done frm networking point of view or computer management or any freeware to help with fast downloading tried clearing trash- didn’t help much with speed.

HD Video Converter can easily convert HD video formats such as AVCHD (mts, m2ts), H.264/AVC, MKV, MPEG-2 (ts), DivX, HD WMV, MPEG-4 and Quick Time.

you could try something like download accerlator (dap), this splits the file into chunks for simultanious download and often speeds up the process.
Your connection speed is set by your ISP (Internet Service Provider). In order to bump up your speed you’ll have to upgrade speeds or switch providers.
I need a program that it will encrypt information over the network. As information sends over network it will be encrypted .Currently setup seven workgroups computer connected together No Server PC. 6 PC has Windows XP & Windows Vista-64bit. I tried TrueCrypt program but it does not encrypt data over the network.

Mac DVD ripper could rip DVD to AVI, multiform videos/audios
Rip DVD movie to video and audio formats including AVI, MPEG, WMV, MP4, DivX, H.264/AVC, MOV, 3GP, 3GP2, MP3, WAV, WMA, AC3, M4A, OGG, RA, AU, etc.

Preferred Freeware or Open Source Program.
How to make sure that computers are identified by their MAC addresses, rather than netbios or hostname?
Sounds like you have a small LAN, peer-to-peer as there is no server. You might have one or two computer with a printer or internet access that shares with the others. The best low cost alternative to software to encrypt files is to properly administer the users privileges and make sure that computer’s identify themselves via MAC addresses.
You can administer RIGHTS and Priviledges to the USERs.

DVD MP4 Converter for MAC provides fast access to high-qualified, easily handle DVD to MP4 conversion.

You can make sure that computers are identified by their MAC addresses, rather than netbios or hostname.
Then you can adjust rights to who can access the files, and then adjust priviledges such as read only, - then no one accept the owner of the folder can modify, delete, etc.
Make sure you firewall your internet connection, you can have host-based firewalls like comodo on each computer if you want the extra security.
If you still want to encrypt, I like Kremlin Encrypt, and it can be installed on each computer, and the password sneaker netted to authorized users.