We don't really like this forum to be used as a vehicle for polls. So I deleted yours.
If you want to offer a free mp3-editor, so that people can 'cut' a part of a mp3-file, than download that part to their cellphone (or mp3-palyer, or maybe just play it), that's a good idea. Just write it and distribute it via download.com, tucows and other freeware sites.
This one tip will help you sleep better tonight
A few seconds are all you need to get a better night's rest.