[mb-style] Disc Numbers for singles

[Stefan Kestenholz]

> As for entering vinyl into the database, common practice seems to be to 
> list all the tracks on side A followed by the tracks on side B, and not to 
> split it into two albums. However, for a second disc of a vinyl release, a 
> new album in entered into the database same as a second disc from a CD 
> release - it doesn't get entered as a single album with the tracks from 
> sides A, B, "C" and "D".

oh, my musicbrain must have abandoned me for a moment. in case it's sold
separately, this speaks strongly for another entry in the database.
the current way of entering discs which are sold *only* together
is suboptimal, that we surely agree on.
I agree with Thomas, that every medium has to be entered into the database
as one entry, with the future possibility to link them together as one
release... but from the responses i got, you would agree that such a medium
field would be a step in the right direction, hmm?