If you want me, GPSoftware, or another developer to volunteer to write a tag plugin for you then you'll have to explain what you want.
I've heard of Vegas and Acid but never used them and don't know a lot about them except that they seem to be something to do with media production. I'm not about to download and install a complex piece of software and then hunt around it to try and understand what you mean when you could just explain it here.
I don't know what kind of tags or audio formats (or if we're even talking about audio and not video or something else) we're talking about here. Are they embedded in the audio files? In a separate database? Do they show things that Opus shows already (Artist, Title, Bitrate, etc.) or completely new data? Are these formats that Opus already handles but with an alternative tagging system, or are they standard formats but ones which Opus doesn't handle yet, or are they formats specific to the app which nothing else uses? If they're specific to the app, is there any documentation on them?