Hello Christian,
before some suggestions (maybe best to change name directly in db), I just want to inform you, that I think it's not best idea to improve track names to fit precisely your current device, mainly because of two reasons
1) when you change device, screen resolution probably also change
2) I plan to improve this screen. I have already idea in head how it should look like and I'm little bit worried, that four characters won't be enough.
Anyway if you want, I can offer you small service. In tracks list is first icon which is not needed, because it's just same as icon of folder. I can add a settings to config file that allows to hide this icon. Because later instead of icon, should be small overview, so this settings may be useful in case, user will not want such overview in list
