Lulea University of Technology (Sweden) has, for the last few years, deployed an Internet-based learning environment, mStar, to distribute courses to students independent of time and geographic distance. The mStar environment gives remotely attending students possibilities equal to traditionally attending students to take an active part in a course, as well as enhancing the learning experience for all students. This is made possible through a novel combination of IP-multicast technology and the World Wide Web. This paper describes net-based learning using the mStar Environment, including large scale distributed lectures and the virtual student community consisting of a virtual teachers' room, virtual group room, and virtual billboards. The paper reports on experiences gained over a few years of practice and depicts a vision of the next generation of the mStar environment. (Contains 14 references.) (Author/MES)