How can i change the bitrate of a song?

to smaller

or bigger.How can i change the bitrate of a song?
There are free converters out there that you can download and change that. You're gonna have to convert the file to the same format to change something like this. Try the ImTOO or XILISOFT converters. They sould be able to help you out. Just remember to change the settings on the right and side of the converters interface.How can i change the bitrate of a song?
you have to re-sample the song to change the bit-rate.