samlee

My guitar and wireless mic take 9v batteries. Alkaline batteries seem to have enough juice to power those. But when I use rechargeable ones (much more expensive than alkaline ones) guitar crackles and wireless mic audio drops suddenly.

It seems like there's mAh (milli ampere?) for each battery and the higher the better.

If you use 9v rechargeable batteries for your instruments, what brand do you use? Many manufacturers don't specify mAh for their rechargeable batteries.

Conan, Superbowl, Olympics... what's next? World Cup? F1?

I need something that'll record audio (from mic, line-in..) and convert it to mp3 or vorbis then upload it to http server.

The closest thing I could find was to do it with Java Web Start, which is fine except that there is no pure Java mp3 encoder and vorbis encoder has weird_java_class_names_like_this (which is ok).

Are there other options? Some other plugins? Unity Web Player? Signed applet (processing, pulpcore...)? Am I expecting too much from browsers? Will Chrome OS make RIA clients really rich?

Should I go with flash + rtmp server just like other web sites?

Will HTML6 have <microphone>, <webcam>, <localdisk>...

I am not a mathematician. But I need to teach SAT math. Should I buy a workbook and do each problem?

The purpose of the class is not to make them into math lovers. But it'd be nice if students see math problems as games (as in sudoku...etc) and kill time with those and get perfect score on SAT.

So, I'm guessing going over SAT test exam problems is a good start. Do you have experience in teaching? How would you keep students motivated? What book would you use if any?