I want to go a bit deeper into this. First of all: I appreciate that you try to help others and think that you are a very nice person, but i just think this whole thing is wrong in many different ways. You may also interprete the following aspects as feature requests, but my main goal is to raise awareness.
1. There is no real need for using an extra application in order to play music in paintball. It supports playing .ogg files with the vorbis library which puts out high-quality sound and has the same basic features (list of songs, play, pause, stop, volume up & down)
2. You give your application without a way for us to really check whether it's free of malicious code. We're already had incidents where some people phished other people accounts:
http://dplogin.com/forums/index.php?topic=27074.0 . Why don't you release the source code? It is possible that your program does something forbidden and using it might result in a ban for people using it. It is possible that you want to get login information for other users profiles. It's just a bad habit to hide information where it shouldn't be necessary to hide it. By making others download this without having real proof (the virustotal scan won't detect malicious code that gets pb users banned or uploads their login credentials) you train them to just download things they can not trust. This is something that should not be done at all, no matter who or what.
You develop for a community and you don't want to earn money by programming this. You do this for an open source game. You use an interpreted language which was designed to make all programs written in it open source. And then you hide behind an installer, don't give any source and donut really make it easy for people to trust you. I think I know you a little bit, and probably you only programmed this for the sake of programming, but the way you published it makes it look like a scam.
3. You say an advantage of your application is that it is lightweight. The installer you provide has a size of 2.3MB. Considering that paintball is already able to play music files, this is 2.3MB too much. Considering that the dll of the bass library, a library that allows programs to play many different sound files including flac, mp3, wav and ogg, is about 100KB large, this is 2.2MB too much.
4. The way your program works is not a good one. Writing a complete consoledump just to give one parameter to another program is something you should not even think about as a programmer who is interested in his users. Just imagine some had installed paintball on a SSD. And you constantly unnecessarily write to it which slowly kills it. I know there is no real way to pass something from an ingame menu to an external application, but then again I have to tell you that there actually is no need for an external application.
5. You upload an installer. I can't support that. Users have no clue what it does, where it diggs into the system an so on. After using it a while, all windows users complain (or at least used to complain) about their PCs being slow as hell. Well, one point of making it slow is running installers like yours. Why don't you just put all needed files into an archive and upload that? Putting a .pak and an .exe file in the right directory is something every user will be able to if they are just told too and then at least they know what exactly was modified.