Struggling with image manipulation softwares to cut the background off your photographs was the old method. It is not something you should do when you have Instant mask with you.

Instant mask is fairly easy to use and removes the background from pictures effectively. It works best when the background is of some distinct color or has a clear sharp boundary with the subject. It offers you a free version with lesser features and an Instant mask pro version with full features. The pro version can be bought or the trial can be used for 14 days before buying.

Again, Instant Mask offers a freeware version with sufficient features also.

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Audacity is one of the best sound editing softwares around. It is very flexible and allows you to do choose from a number of automated processes. It also allows you to save to mp3 format using the lame_enc.dll. It is available for download at [AUDACITY] and did I mention it is open source.

The following process demonstrated removes vocals from most of the songs. Works best with stereo mp3s.