OGG Converter

OGG Converter

Converts MP3, WAV, WMA, OGG from one to another.
Very useful when you copy music to Serious Sam.

http://ogg-converter.com/

OGG Converter is a little tool for converting MP3, WAV, WMA, OGG from one to another. It also supports resampling of MP3 to MP3, WAV to WAV, WMA to WMA, OGG to OGG. Unlike other converters, this converter use easy-to-use and step-by-step wizard for converting work. With the following 6 steps, your work would be done on-the-fly.

Step 1: Choose source format from MP3, WAV, WMA, OGG Vorbis
Step 2: Add files for converting
Step 3: Choose destination format
Step 4: Set the destination format options
Step 5: Set other converting options like output folder and other.
Step 6: Start converting progress

Key Features

Convert MP3, WAV, WMA, OGG from one to another on-the-fly
Resample of MP3 to MP3, WAV to WAV, WMA to WMA, OGG to OGG
Easy-to-use Wizard for converting work
Support MP3 VBR and OGG Vorbis VBR
Cool Skin
Convert MP3/WAV files of all frequency, bitrates, ...
Works on Microsoft Windows 98, ME, NT, 2000, and XP

Fixed title typo, also Mental4 should move it to the right forum.

Sounds interesting but you can use DVDVideoSoft which converts all files you want to the format you want, but also you can download youtube videos on your computer or you can download only the sound from the video.

Anyway, is it done by you?

No.
I found this program by Google

downloading sounds from youtube video sucks shit anway, the sound quality is a total disaster.
You can get the songs from soundcloud but if you really search the REAL quality of the sound you're listening to, there's nothing better than buying it. (or download it from illegal source but let's make as I didn't say anything.. )