Free YouTube to MP3 Converter for Mac OS X downloads YouTube videos and converts their audio to MP3. It uses a multithreaded engine for downloads. It automatically catches links of YouTube clips which you copy to the clipboard, and you only need to click on Download.
Google2SRT allows you to convert subtitles from
Google Video and YouTube to the SubRip (.srt)
format, which is recognized by most video players.
You can download XML subtitles or simply type the
video's URL, and Google2SRT will do the rest.