How to alternate two 4Gs in a playlist?

[Breeze]

Alright guys, thought I would ask this here.

I bought OF 1.1 and BIABWS from the sales the other day and decided to run them together. One 8 hours during the day and the other 8 hours whilst sleeping at night, then alternating.

I noticed that OF is type B and BIABWS is type B/D so it should be fine but Shannon's comment about those other 2 have made me doubtful.

What does anyone think? Can I play them together or shall I just do one at a time?

Personally, I'll recommend to pick one and go with it, but you should be fine.