Implement features you want to see, or take a look at the issue tracker and fix broken things. Before making bigger changes, see that a contributor is supporting the inclusion, so that you can be sure it will be merged. (See Discuss Ideas below)
If you have any questions, the easiest way to get help is asking in the #playmusicexporter IRC channel on freenode. You can join that on webchat.freenode.net, or preferably, if you are not really an IRC guy anyway, try the corresponding matrix room [#playmusicexporter:jcg.re](https://matrix.to/#/#playmusicexporter:jcg.re). They are bridged together, so everything that happens in one of the rooms gets automatically transfered to the other one too.
If you want to support this project, the best way to do so is contributing source code to the project (see above), or help with illustrations, if that is something you're good at! (I am most certainly not good at creating icons and such things)
If you are unable to do that, but you still want to support this project, you could send me some bitcoins instead: 1NdzpDWPQ53xWT5fraGPZX5F9XrKiPBXjp
I will distribute bitcoins send to me to others helping on the project too, so that other people contributing also have a piece of the cake.