@Rinnegatamante I don't want to sound harsh, but you should rethink your download mirrors (ie, how you set them up). Ad.fly in itself is already a pretty shitty service, but even Ad.fly forwards to an ad link here. I myself haven't been able to download CHMM2 in my browser (had to use JDownloader in the end...). It is okay hoping to get some return for your work or asking for donations, but all in all, this is a bit too much.. Add to that (and again, this is meant as constructive criticism) that it is not exactly easy to find what one is looking for on your website. You could use the release function of GitHub as an alternative.
EDIT: Oh well, and now I updated to v2.5 and it wants that stupid dspfirm.cdc file. I know why you're doing this, and sound previews are in fact nice, but not at all required for a software such as this. This should be optional. To be honest, I'd rather downgrade CHMM than going through the troubles of obtaining this file.