It seems the Ogg streams (m3u, xspf) are no longer seekable, i.e. it isn’t possible to skip forward or backward in playing time. This makes it somewhat cumbersome to quickly get a feel for new tracks, to know which albums are worth downloading. I’ve switched to MP3 streaming for the time being, since they are still seekable, but I hope that seeking returns to Ogg streams as well at some point, as I otherwise prefer them.