I would also hoping to have the column sizes adjustable and the sizes saved to config file. I also would like to see the list can be sorted by clicking at a column. More columns to choose from (e.g. length of clip, artist + title combined option, track number, codec, bitrate)

Cosmetic changes would also be nice - having a larger album art, adding a playback timer, a longer progress bar (may need to rearrange the controls...)

Thanks for your great music player. Please keep on improving it!