I've exhausted all Google/forum resources I could find on the subject, so I come to you now Tdub.

I have a collection of 19 mp3 files that form one collective mix of music. They're by a DJ and are made to be played straight through.

I like to take the files for a given set that's been put together like the one I'm currently dealing with, and combine them into one file using a free program called MP3Trimmer that has a pretty easy to use mp3 joiner built in.

Normally this is a 2 minute operation. However, this one particular set won't combine because it has a variety of sample rates ranging from 32000 Hz to 48000 Hz, as well as several 44100 Hz files. All at 192 kbs.

I've tried converting to .wav to normalize with a uniform sample rate, and then re-converting back to .mp3. That doesn't work.

Does anyone have an OSX solution to get these files to a uniform sample rate and still in .mp3 format?

3/2/2013 6:06:39 PM

Audacity

3/2/2013 6:49:07 PM

Thanks, I'll check it out.

3/2/2013 6:53:13 PM

Adobe audition, available as a 30 day trial.

3/2/2013 7:39:09 PM

I was about to suggest the 3.0 version that Adobe basically made available for free, but that's Windows-only.

3/2/2013 8:04:55 PM

there really isn't any answer BUT audacity

3/2/2013 8:22:11 PM

What kind of ghetto software can't handle VBR?

3/2/2013 8:59:18 PM

^ i don't think VBR is the issue...i think the sampling rates are different and the software he's using doesn't like joining files of differing sampling

3/2/2013 9:34:05 PM

That's exactly the issue. If there is software out there that says YOLO to that and will just join them regardless, then I'd just use that. But I don't know enough about the technical aspects of audio sample rates and mp3 compression to know if that's even feasible.

However, I will say I found a non-Audacity solution. Audacity is awesome for tweaking, but what I wanted was a batch processer. The good news is, I found out that the audio compression software I use actually does have this functionality built in.

It's a program called Switch. I use it to reencode mp3s to lower bitrates mostly, but it has an add-on program called WavePad that allows for batch processing of audio files to adjust just about anything.

3/3/2013 8:51:16 AM

Discovered also that Switch/WavePad also has a pretty intuitive joiner that I personally find easier to use than Audacity (simply "insert file at the end of current file" without any of the copy/pasting). Do that 18 times and save file.

All problems solved.



[Edited on March 3, 2013 at 9:33 AM. Reason : .]

3/3/2013 9:31:51 AM