I recently switched to JRiver Media Server. A lot of my media is LP's that were digitized **years** ago to MP3 files. One issue I have with many of these is that there is a low-frequency rumble. I found I can acceptably remove this using the equalizer build into the editor. Which is nice; but I am left with a file that has the tags removed. Which makes it quite a hassle. But doing this file by file was going to be a bit of a hassle at any rate. Not sure that I have energy to reinvigorate my programming chops and dig into the code...
Guess the alternative is to re-digitize the LP's using something like Audacity (doesn't seem that JRiver has the functionality to automatically identify track boundaries...). Of course that moves me to a more modern set of encoding choices and better low frequency sound, so maybe it is time...