I started writing my own midi to abc converter, it's still in the alpha phase, but the core engine is working (most of the time), that's why I'm doing this post now. I put some conversions I did with it on my website, so even if you don't want to or can't use it, you can listen to some of the conversions done with it ( if you got the abcplayer that is ). Also I am hosting the source-code of the program there, so feel free to copy/modify or delete it
I did not implement all the features that Firefern's converter has to offer (I really like that webpage), but I wanted to have something I could use offline (while travelling with the train etc). So what I came up with is a command line python tool, which so far is only usable on linux systems - sorry but it's just easier to develop there
Although it is not at all as easy to use as Firefern's converter I added some additional capabilities like arbitrary mapping of midi-channels to the lotro-channels, for example you can map the melody with full volume to a clarinet, the same melody transposed by one octave and with reduced amplitude and a small delay to the flute ( that produces some echo-like effect ).
Also polyphony can be adjusted for the abc-tracks, meaning an instrument like the flute would play only one note at a time, even if you map several tracks to it.
So if you are interested in having other effects included or maybe help me turn this into something that can be run on windows with a graphical user interface .. I'm open for suggestions - python programs can be converted into executables for windows .. generally (not with the current form of the code) .. so even an external GUI could do the trick.