ConcertZender (Radio Hilversum Netherlands) has World Music;
Rozhlas D-dur (also use the link
D-dur English) (Czech Republic; has OGG, WMA and MP3 links) has works by Josef Myslivecek (1737-1781), Jan Dismas Zelenka (1679-1745, spent much of his life in Dresden- an hour-long cantata "The Bronze Serpent", not the trio sonatas that are more often on the radio :) ), Bohuslav Martinu (1890-1959, specifically his first symphony), Mozart, Bach (a cantata) and Liszt (the transcendental etudes).
Edit: Not just any Mozart, but a favorite Mozart work of mine :) - the divertimento for string trio in E♭.
BBC Radio 3 has about 168 hours' worth of music, much of it classical but not all, on in addition to what's playing now (one needs RealPlayer or the RealAudio plugin to hear it, and the Listen Again page gives access to the archives of the last week's worth of programming.) One can hear five hour-long programs devoted to Mikhail Glinka's music just today for example (the first will be stored until next Monday morning when the first of the
next Composer of the Week series, on Buxtehude, will start, the second until Tuesday, etc.) The night-program on BBC (
tonight's, broadcasting Saturday May 5 timelocal in the UK) is especially nicely varied in my opinion. It is my favorite station.