As of today, when you clone the frostwire-desktop github repository, you can now work from IntelliJIdea and build it right of.
Just make sure you put the following on the VM Options of the Application’s Run/Debug Configuration:
FrostWire is a free, open source BitTorrent client first released in September 2004, as a fork of LimeWire. It was initially very similar to LimeWire in appearance and functionality, but over time developers added more features, including BitTorrent support. In version 5, Gnutella support was dropped entirely, and FrostWire is only a BitTorrent client. Development of the program has been active since the program was first released in September 2004.