I have been running into the same issue as I move arrangements form my desktop to the new Surface Pro 2. What you are suggesting is to render the song to mp3/wav. This will indeed bring the whole song over, but you will lose the biab features. unfortunately, at this time this is the best option short of buying a big portable drive to load everything for the laptop/tablet.

I have been thinking of going to the wish list and asking for a utility which "copies the RT's along with the BIAB file". This would permit any RT used in a specific song to be copied over when the song is copied over. Like a Move BIAB Song with RT's to different Disk command.



BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6