merge mp3 files to one file (OpenSuSE 12.2)

step 1:  concatenate files into one mp3 file.
> cat file1.mp3 file2.mp3 ... > joined.mp3

step 2:  repair broken files using ffmpeg.
> ffmpeg -i joined.mp3 -acodec copy output.mp3

step 3:  copy ID3-tag from a file to the new file. install package id3lib-examples if needed.
> id3cp file1.mp3 output.mp3

Disable ActiveX in Office 2010

step 1: go to the "ファイル" tab, click on "オプション".

step 2: look for "セキュリティセンター" on the left, and then click "セキュリティセンターの設定".

step 3: look for "ActiveXの設定" on the left, and check the box named "警告を表示せずにすべてのコントロールを無効にする".

Safety Tips for Adobe Reader

do the following two steps to disable: i) JavaScript, and ii) opening of attachments using other program inside pdf:

step 1: go to "編集" tab, select "環境設定".
step 2: locate "JavaScript" on the left, and uncheck the box named "Acrobat JavaScript".

step 1: go to "編集" table, select "環境設定".
step 2: locate "信頼性管理マネージャー", and uncheck the box named "外部アプリケーションでPDF以外の添付ファイルを開くことを許可".

RLO対策

This is to avoid the virus .exe file masquerading as some other files with a different extensions like .pdf by reversing the order in which filenames and extensions are displayed. this procedure was done on windows 7 professional edition.

step 1: in the start button, type "ローカル" in the search box, to locate program called "ローカルセキュリティポリシー".

step 2: local "ソフトウェアの制限のポリシー", right click to locate "新しいソフトウェアの制限のポリシー".

step 3: under "追加の規則", right click to locate "新しいパスの規則".

step 4: under パス, enter "**". put cursor in-between the two hash mark, right click to locate "unicode制限文字の挿入". select "RLO".

step 5: exit all windows.