There seems to be roughly 4 lines of space next to the album art. However only 3 are used.
- Song Title
- Artist
- Album
If nothing is planned for the 4th line. I propose that it is used for track time/length. This way you can tell how far along a song is without the need of a scrub bar.
Unrelated, but I feel that the play-lists section should display how many songs are in that play list. Some of my play lists have no songs, and without realising this, it seems like a bug that the songs wont play.
From the SoundMenu wiki:
Emphasis mine
There are no plans for a "fourth" row.