LameVST
MP3 as VST-effect.
Ideal solution, if you need to preview you track in the mp3-mode during playback.
Prerequisites
Windows Build
$ cd deps
$ sync
$ cd ..
$ md build && cd build
$ cmake .. # Or whatever generator (-G) you want to use cmake --help for a list.
$ cmake --build . --config Release
$ start LameVST_Solution.sln
or just use bat-file:
!!make_project!!.bat
Linux Build (e.g. UBUNTU)
$ sudo apt-get install build-essential
$ cd deps
$ ./sync.sh
$ cd ..
$ mkdir build
$ cd build
$ cmake ..
$ make
Result
After successfull build the resulting DLL file will be available there (you can copy it into your VST folder):
LameVST\LameVST_DLL