Example 13 minute vbr mp3 file: mp3 > mp3 = 18 seconds conversion time mp3 > mp3 tempo -s 1.5 = 27 seconds conversion time While I love Sox very much and I appreciate that there's more processing to do with "tempo", I've got a LOT of files to time-squeeze and I was wondering if there was a faster way of doing this? Happy to use another tool for this (Ubuntu). I found "soundstretch" but that just does wav > wav. I know I could use something like https://gist.github.com/NigelThorne/100996 but that's mp3 > wav > soundstrech > wav > mp3. Many thanks. _______________________________________________ Sox-users mailing list Sox-users@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/sox-users