how to reduce the file size

dear guys,

last night i have recorded a demo song
it has 22 tracks , no vocals , only instruments, and durms
(in my daw reaper)

i rendered it in MP3 format (320) and its capacity is 12 mb,

running for only 4 minutes


i checked the cpu usage and it is zero

Kindly advice me how to reduce the file size

awaiting

Quote:

i rendered it in MP3 format (320) and its capacity is 12 mb,


Use a lower bit rate... 256, 192, 128....

But remember, mp3 is a lossy format and the lower the bps the lower the quality.

thanks mark i will try it