I think this might be the 4th time my review got deleted, so here's a recap. (1) Offline mode tends to be slow, (2) it seems to forget your liked songs over periods of just a few days, (3) then disables playback for all songs in less than a week. Very frustrating. Online mode can be slow and very obstruive as well, especially when there's a poor connection - why does an album that's already downloaded take so long to load?