how do i work with audacity? i just installed the program,mostly i want to use it to speed up the songs,i found the button to lower or speed up a song but how can i save this song and still be faster or slower when i play it like mp3 on my laptop??
The slider on the front of Audacity is just a player. It doesn’t change the show. If you do want to change the show:
Effect > Change Speed
Effect > Change Tempo
Effect > Change pitch.
Then to save your altered file, File → Export.
If you want to export to MP3, you’ll need to download and install the optional LAME MP3 encoder.
Of course, it’s a good idea to make a new file rather than over-writing your existing file