How can you save the files (export) to use it later on, on your PC or somewhere else?
Thats my point of a "real" tracker
Do you mean exporting as audio file or making save file?
Only way to export as audio is to record from headphone output to external recorder/computer. Emulator makes save file so you can store your tunes in memory stick or other storage media.
I love LSDJ, you can get really weird sounds out of it, its capable of doing one of hardest gabber bass drums in the world