Lyn:

OK, I see what you're after now.
I checked the Help file for "Jukebox" and found this:

"Generate Solos: Set this option to "On" to permit the Soloist to play a solo over all the songs selected for Jukebox Playback."

Rather than using an existing folder of BIAB Demo songs, (too long for testing purposes), I just created 3 short, 8-bar songs, all with the same style, and put them into a new Jukebox Test folder.

1. Clicked on the Play Jukebox icon and enabled the Generate Solos box
2. Ensured that the Directory was set to the correct path for my new Test folder
3. Clicked on the PLAY JUKE BOX button which opens the Select Soloist window
4. Selected number 1 Bebop Saxaphone, left all other defaults, clicked OK
5. BIAB played all 3 songs (Test 01, Test 02, and Test 03) in my Test folder WITH the saxaphone soloist
6. It kept playing all 3 songs likewise so I must have a "continuous" or "loop" function set somewhere (checked - "Loop Jukebox at end" is enabled")

So far, so good.

- left the style for Test 01 set to ZZJAZZ
- set the style for Test 02 to ZZJAZZ2 - (it wouldn't "set" from the StylePicker window. I had to use the Open Style From Disc function). Saved the song.
- set the style for Test 03 to ZZOLCTRY - (this one worked with the StylePicker - strange!). Saved the song.

Repeated the steps above to play the 3 songs in the Jukebox.
It played the 3 test songs, with the 3 different styles, including ALL the instruments.

So we know that the Jukebox itself, functions as expected.
For your first question regarding "Solo RealTracks", when the Select Soloist window opens (Step 3. above), there's buttons near the top left: Best RealTracks, Fav, All RealTracks and Show All.

I clicked the Best RealTracks and got a list so I picked the first one (361), clicked OK and it takes me back to the Select Soloist window AND it highlights soloist 361, which was already in the list (I assumed it was a RealTrack).

I clicked OK and it generated a sax solo.

HOWEVER
- It only played Test 01 and would NOT play the others in the file
- Although it generated a SAX sols (RealTrack?), the button along the top next to Melody (which would normally be Soloist) says Vibes, in green, and underlined
- Similarly in the Mixer window, below Melody, it says Vibes in yellow and "361: Sax, Tenor, Jazz Sw 140 (Soloist)"

Soooo, I'm not sure if that's a RealTrack or not <grin>.
In any case, it appears all is not well with the Jukebox function, at least the way it handles a soloist.

I was hoping you would give us more specific info as to what songs you were trying from which folders so I could do an apples-to-apples comparison, but maybe this is enough fodder for you to take to PGMusic Support.

Let me know if you want me to try anything else.
Good luck!
LLOYD S