MKV AudioConverter is a free program thta made to be Matroska MKV DTS to MKV AC3 converter and not only that because this freeware also can remove DTS tracks and convert OGG audio to AC3,MP3,AAC,MP3.

It requires a lots of external tools but AudioConverter will prompt the user to download them.

ShowIP is a tool, that shows your current IP-address. It runs in the system tray and shows your computer name and IP address when double-clicked. In addition to the local (LAN) IP, it also shows the external (WAN) IP address, which is useful if you are behind a router.

DataRecovery is a free program that will help you to restore deleted files even from recycle bin

DataRecovery Features:

* FAT12,FAT16,FAT32,NTFS undeletion
* undelete whole files in a directory
* search by partial string in the file name
* runnable from floppy disk
* undelete NTFS compressed files
* undelete EFS encrypted files
* wipe out deleted files never to be recovered again
* neither installation nor DLLs is needed
* Windows Vista supported

What’s New in version 2.4.6:

* Made it possible to recover large files(up to 4G).
* Fixed bugs that cause abnormal termination during normal scan.
* Improved user interface.