Should work on many ROMs and newer phones. You must be Rooted…Make a Nand Backup…I’m not responsible for problems...YMMV
For Froyo: Flash zip file like ROM, kernel, theme, etc. The proper Froyo library files will be added along with the app. Suggest you wipe cache and dalvik cache. If you have an older version in my test it appears you can flash over it and it will overwrite older files and update it. As always recommend NAND backup first.
For Gingerbread: Install apk file. Newer Android GB ROMs (appears to work up through GB 2.3.5) are no longer dependent on audio library files to be added to get DSP working. You should be able to just install a DSP apk to get it working. I've attached an apk. Do Not Use the Zip...that's for Froyo ONLY. As always recommend NAND backup first.
DSP Manager Dev http://bel.fi/~alankila/android-dsp/