Fade in / Fade out of Existing Clip

What’s the best way to achieve this? Right now I’m lifting from tape, dropping into sampler, then re-recording to tape from sampler while increasing or decreasing the volume using the input gain on the tape (orange knob).

Am I missing an easier way to accomplish this?

That sounds like the solution I would go for. An alternative might be to use the white ear to record to a spare tape track while increasing and decreasing the orange slider. Note though: the white ear also records drive, EQ and master effects.