Alternative to iTunes? Over the past decade I've come to acquire a random selection of large hard disks from my older computers. While most of the stuff on it isn't vital, there are fair bits of music I made over the years just sitting on them. 

I'd like to have all these files stored in some kind of library kinda like the way iTunes does it... HOWEVER.

A lot of it is either crap, or the disk may even contain large groupings of game audio files etc. 

I don't want to bog my actual iTunes library down with this nonsense. So can anyone recommend me an alternative that will essentially scan these old disks and add any content to its library.
You could create alternative iTunes libraries. 

Just hold the Option key while starting iTunes and point it to a new directory. To go back to your main library quit iTunes and start it again while holding the Option key. 

If you are on Windows, the Alt key should have the same function, I don't remember which one.