Common mp3 - 128/44 stereo (this the most accepted format for uploading to sites) Higher bitrates sound better but add size and may not work for some sites.

common wave file -16/44 (CD quality)

for windows media files, common WMA format is also 128kbps (usually defined as cd quality by windows media player)

That should get you started.


I do not work here, but the benefits are still awesome
Make your sound your own!