After a few searches, I believe I've come up with a match. I searched under all types for 'serein .mp3' and came up with 2 files titled '03 sereine', which match your song number.

The first one connected, went to 1%, and then said 'waiting on busy hosts.'
The second one automatically went to 'waiting in line, position 4'

I'll let you know if I'm successful in downloading either of them.
Tried searching for several other songs in the same way with no luck.

What are your upload settings, i.e. bandwidth and slots? Are you currently downloading?

The files I found have sizes of 5,030 and 5,028 kB. Is this the size of your song?