I have tried minilyrics, but I find it also has some problems.
1. it could only search lyrics from google (I could not change to other site to search) and it always gets null result. (maybe cause of my network),
2. it could show lyric in itself windows or float like karaoke, but some times I use MB with theater mode and perfect a lrc panel in MB
I think add a option to define lrc folder is easy and effective